scholarly journals Some Heavy metals elements in milk powder samples collected from Baghdad markets

2018 ◽  
pp. 61-67
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Human Health ◽  
Milk Powder ◽  
Atomic Absorption Spectrophotometer ◽  
Toxic Effects ◽  
Trade Marks ◽  
Powder Milk ◽  
Powder Samples

powder milk is an important foodstuff and beneficial to human health. Thirty random milk powder samples of different trade marks (Rawan® limit full milk powder), (Dielac® milk powder) and (Fresh instant milk powder) were collected from different outlets in Baghdad capital of a IRAQ, They were analyzed by Atomic Absorption Spectrophotometer for the concentrations of following heavy metals, lead (Pb), iron (Fe), aluminium (Al), Cadmium (Cd), and manganese (Mn)]. This study appeared that the concentrations of heavy metal Fe samples is above the allowed limit in (Rawan® limit milk powder). However, the concentrations of about thirty percent of the samples of Fe in (Dielac full cream milk powder) is above the allowed limits. The concentration of Pb in (Fresh instant full cream milk powder) is above the permissible limit. All the examined samples found free of Cd. Air, water and plants considered as a main contamination of the milk powder by heavy metals. So, it is necessary for warning from the toxic effects for these heavy metals for children and adults.

scholarly journals Studi Penurunan Kadar Logam Besi (Fe) dan Logam Tembaga (Cu) pada Air Embung Menggunakan Adsorben Nanosilika

2017 ◽  
Vol 17 (2) ◽  
pp. 131
Author(s):  
Emas Agus Prastyo Wibowo ◽  
Ika Sri Hardyanti ◽  
Isni Nurani ◽  
Dyan Septyaningsih Hardjono HP ◽  
Aden Dhana Rizkita
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Water Use ◽  
Metal Content ◽  
Atomic Absorption Spectrophotometer ◽  
Absorption Method ◽  
Wastewater Purification ◽  
Stirring Time ◽  
Independent Variable

STUDI PENURUNAN KADAR LOGAM BESI (Fe) DAN LOGAM TEMBAGA (Cu) PADA AIR EMBUNG MENGGUNAKAN ADSORBEN NANOSILIKAABSTRAKPolusi limbah logam berat dalam air merupakan satu permasalahan lingkungan yang penting. Dalam mengatasi permasalahan tersebut dapat dilakukan purifikasi terhadap air tersebut. Metode yang dapat digunakan untuk purifikasi limbah sangat beragam salah satunya adalah absorpsi. Secara umum metode absorpsi telah banyak digunakan dalam purifikasi air limbah. Metode absorpsi dapat menurunkan kadar logam yang terlarut pada limbah. cair dengan cara menyerap logam-logam tersebut ke dalam permukaan absorbennya. Tujuan dilakukan penelitian ini adalah  untuk menurunkan konsentrasi logam besi (Fe) dan tembaga (Cu) menggunakan adsorben nanosilika. Penelitian ini menggunakan variabel bebas yaitu waktu pengadukan (20 menit, 40 menit, dan 60 menit). Hasil akhir filtrat air embung kemudian diukur absorbansinya menggunakan Spektrofotometer Serapan Atom. Berdasarkan hasil analisa menggunakan instrumen SSA diperoleh hasil bahwa tidak terjadi penurunan logam Fe maupun Cu. Dalam hal ini terjadi peningkatan konsentrasi dalam logam Fe maupun Cu, hal ini dikarenakan kurangnya waktu pengadukan dan pengaruh dari adsorben nanosilika.Kata Kunci: limbah, logam berat, nanosilika STUDY OF DECREASING METALS IRON (Fe) AND COPPER (Cu) ON EMBUNG WATER USE OF NANOSILICA ADSORBEN ABSTRACTHeavy waste pollution of heavy metals in the water is an important environment issue. To solve the problem, its can be purified the water. The methods that can be used for waste purification are very diverse, one of which is absorption. In general, the method of absorption has been widely used in wastewater purification. The absorption method can decrease dissolved metal content in the waste. liquid by absorbing the metals into the absorbent surface. Research has been conducted to reduce the concentration of iron (Fe) and copper (Cu) by using nanosilica adsorbent. This research used to independent variable that is stirring time (20 minutes, 40 minutes, and 60 minutes). The final result of filtrate embung water then measured its absorbance using Atomic Absorption Spectrophotometer (AAS). Based on the result of the analysis using SSA instrument, it is found that there is no decrease of Fe and Cu metals. There are several reasons for those problem such as due to lack of stirring time and the influence of nanosilica adsorbent.Keywords: Waste pollution, heavy metal, nanosilica

scholarly journals Kandungan Logam Berat Timbal (Pb) Dan Kadmium (Cd) Pada Air, Sedimen Dan Organ Mangrove Di Perairan Tulehu

2020 ◽  
Vol 8 (2) ◽  
pp. 149
Author(s):  
NUR ALIM NATSIR ◽  
YUSRIANTI HANIKE ◽  
MUHAMMAD RIJAL ◽  
SUHAEDIR BACHTIAR
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Key Words ◽  
Aquatic Environment ◽  
Aquatic Organisms ◽  
Atomic Absorption Spectrophotometer ◽  
Lead And Cadmium ◽  
Stems And Leaves ◽  
And Control

Differences in the accumulation of heavy metals lead and cadmium in water, sediments and mangrove organs (roots, stems and leaves) found in the waters of Tulehu, Maluku Province. Samples were taken from three observation stations, namely stopping ships that are not operating (station 1), Tulehu harbor (station 2) and Control (station 3). Pb and Cd were analyzed using Atomic Absorption Spectrophotometer. Pb and Cd content in sediments is higher than in water. The highest Pb and Cd content is found in the stems then in the roots and leaves (stems> roots> leaves). Mangroves are one of the aquatic organisms that have the ability to absorb heavy metals in the aquatic environment. Key words: Mangrove, Pb, Cd, Heavy Metal

scholarly journals Hubungan Logam Berat Pb terhadap Fraksi Sedimen dan Bahan Organik di Muara Sungai Tiram, Marunda, Jakarta Utara

2019 ◽  
Vol 8 (2) ◽  
pp. 61
Author(s):  
Indah Syahiddah Fitroh ◽  
Petrus Subardjo ◽  
Lilik Maslukah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Grain Size ◽  
Organic Matter ◽  
Atomic Absorption ◽  
Size Fraction ◽  
Heavy Metal Concentration ◽  
Atomic Absorption Spectrophotometer ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

Kegiatan industri di Perairan Muara Sungai Tiram, Marunda, Jakarta Utara, akan berdampak terhadap konsentrasi logam berat di Perairan. Sedimen merupakan tempat akumulasinya logam tersebut dan pada suatu saat akan dapat menjadi sumber bagi kolom perairan diatasnya. Tujuan penelitian ini adalah untuk mengetahui konsentrasi logam berat pada sedimen dasar dan mengetahui korelasinya terhadap ukuran butir serta dan bahan organik. Analisa logam berat diawali dengan proses destruksi menggunakan aquaregia dan supernatannya di baca nilai absorbasninya menggunakan Atomic Absorption Spectrophotometer (AAS). Untuk melihat hubungan parameter logam berat terhadap ukuran butir dan bahan organik, menngunakan analisis korelasi Pearson. Berdasarkan penelitian tersebut diperoleh nilai konsentrasi logam berat dengan kisaran 20,19–55,68 ppm. Konsentrasi logam berat memiliki korelasi positif terhadap fraksi silt dan clay.  Distribusi logam berat di lokasi penelitian berasosiasi kuat terhadap fraksi ukuran butir halus dan bahan organik, melalui proses adsorpsi. The waters of the Muara Sungai Tiram, Marunda, North Jakarta, are areas that are surrounded by very dense industrial activities. The existence of these activities has an impact on the concentration of heavy metals in basic sediments in these waters. The purpose of this study was to determine the concentration of heavy metals in basic sediments and determine the correlation between the concentration of heavy metals with grain size on the base sediment in the liquid and the correlation between the concentration of heavy metals with organic matter. Analysis of heavy metal concentrations was carried out using the acid destruction method, then the concentration was read using the Atomic Absorption Spectrophotometer (AAS), and processed into a heavy metal concentration map using Arcgis 10.3. Based on these studies the value of heavy metal concentrations obtained in the range of 20.19 - 55.681 ppm. Heavy metal concentrations have a positive correlation with the mud and organic matter fractions with r values of 0.68 and 0.10, respectively. The distribution of heavy metals in this study is strongly associated with the fine grain size fraction and organic matter, through the adsorption process

scholarly journals SEBARAN SPASIAL LOGAM BERAT Pb DAN Cd PADA KOLOM AIR DAN SEDIMEN DI PERAIRAN MUARA CISADANE, BANTEN (Spatial Distribution of Heavy Metals Pb and Cd in Column Water And Sediments in the Waters of Cisadane Estuary, Banten)

2018 ◽  
Vol 6 (4) ◽  
pp. 455-462
Author(s):  
Novananda Nadia ◽  
Siti Rudiyanti ◽  
Haeruddin Haeruddin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Atomic Absorption ◽  
Water Column ◽  
Atomic Absorption Spectrophotometer ◽  
Research Station ◽  
Purposive Sampling ◽  
Water And Sediment ◽  
Heavy Metal Cd

Sungai Cisadane memiliki fungsi penting bagi kehidupan manusia dan makhluk hidup lain disekitarnya. Berbagai jenis aktivitas manusia mulai dari pertanian, perikanan, pemukiman, pariwisata, perkebunan, transportasi hingga berbagai aktivitas industri terjadi di sepanjang Sungai Cisadane. Berbagai aktivitas tersebut menyebabkan penurunan kualitas air Sungai Cisadane setiap tahunnya. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi serta sebaran spasial logam berat Pb dan Cd pada kolom air dan sedimen di perairan muara Cisadane, Tangerang, Banten. Pengambilan sampel dilakukan sebanyak 1 kali yaitu pada tanggal 15 Januari 2017, sampel yang diambil berupa air dan sedimen, dan pengukuran parameter fisika kimia perairan. Pengambilan sampel dilakukan di 9 stasiun pengamatan yang ditentukan berdasarkan adanya aktivitas industri disekitar perairan tersebut. Metode yang digunakan adalah metode deskriptif dengan metode sampling menggunakan teknik purposive sampling. Pengukuran logam berat Pb dan Cd mengacu pada metode SNI dengan spektrofotometer AAS (Atomic Absorption Spectrophotometer). Hasil pengukuran konsentrasi logam berat Pb pada kolom air yaitu berkisar antara <0,001 hingga <0,01 mg/l dan konsentrasi logam berat Cd pada kolom air yaitu <0,002 mg/l. Sedangkan konsentrasi logam berat Pb pada sedimen berkisar antara <0,01 hingga 52,8040 mg/kg dan konsentrasi logam berat Cd pada sedimen yaitu <0,002 mg/kg. Apabila dilihat dari gambaran sebaran spasial logam berat Pb dan Cd di air dan sedimen, dapat disimpulkan bahwa logam berat Pb dan Cd di perairan muara Cisadane tersebar di seluruh stasiun penelitian, tetapi masih tergolong rendah konsentrasinya dan sebagian besar masih berada di bawah baku mutu yang telah ditetapkan.  The Cisadane River has an important function for human life and other living things around it. Various types of human activities from agriculture, fisheries, settlements, tourism, plantations, transportation to various industrial activities occur along the Cisadane River. These activities has caused the decrease in the water quality of the Cisadane River each year. The purpose of this research is to know the concentration and spatial distribution of heavy metals Pb and Cd on water column and sediment in the waters of Cisadane estuary, Tangerang, Banten. Sampling was conducted once on January 15, 2017, samples taken in the form of water and sediment, and measurement of water chemistry physics parameters. Sampling was conducted at 9 observation stations determined based on the existence of industrial activity around the waters. The method used is descriptive method of sampling method using purposive sampling technique. Measurements of heavy metals Pb and Cd referring to the ISO method with a spectrophotometer AAS (Atomic Absorption Spectrophotometer). The result of measurement of heavy metal concentration of Pb in the water column is between <0,001 to <0,01 mg/l and concentration of heavy metal Cd in water column that is <0,002 mg/l. While concentrations of Pb heavy metals in sediments ranged from <0.01 to 52.8040 mg/kg and concentrations of heavy metal Cd in sediments ie <0.002 mg/kg. When viewed from the description of the spatial distribution of heavy metals of Pb and Cd in water and sediment, it can be concluded that there are heavy metals of Pb and Cd in the waters of Cisadane estuary scattered throughout the research station, but still relatively low concentration and most are still below the standard which has been set.

scholarly journals Heavy metal levels in spent engine oils and fingernails of auto-mechanics

2021 ◽  
Vol 32 (1) ◽  
pp. 28-32
Author(s):  
Chris Oche Ikese ◽  
Peter Agorye Adie ◽  
Christie Adah ◽  
Raphael Amokaha ◽  
Grace Abu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Atomic Absorption Spectrophotometer ◽  
Exposure Limits ◽  
Engine Oils ◽  
Metal Levels ◽  
Study Population ◽  
Permissible Exposure Limits ◽  
The Mean

Abstract The levels of some heavy metals in spent engine oils and in the fingernails of auto-mechanics were studied. Engine oils and fingernails were collected from auto-mechanics who had practiced between ≤ 5 years, ≤ 10 years and ≤ 15 years in 3 auto-mechanic workshop clusters. Pb, Ni, V, Cd, and As levels were determined using Atomic Absorption Spectrophotometer. The mean levels of Pb, Ni, V and Cd in spent engine oils were 14.31, 2.25, 0.38 and 2.07 ppm respectively, and these far exceeded their permissible exposure limits. The mean levels of heavy metals in the fingernails of auto-mechanics who had practiced for ≤ 5 years, ≤ 10 years and ≤ 15 years were all considerably below their pathological thresholds. Thus, auto-mechanics in the study area are exposed to unsafe levels of Pb, Ni, V, and Cd, but no immediate threat of their toxicities in the study population exist. However, a progressive bioaccumulation of the heavy metals was observed with increase in years of practice.

scholarly journals SPESIASI DAN BIOAVAILABILITAS LOGAM BERAT DALAM SEDIMEN SUNGAI ROOMO GRESIK

Jurnal Kimia ◽  
2020 ◽  
pp. 153
Author(s):  
I M. Siaka ◽  
W. A. Rozin ◽  
K. G. D. Putra
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sequential Extraction ◽  
Atomic Absorption ◽  
Industrial Waste ◽  
River Sediment ◽  
Atomic Absorption Spectrophotometer ◽  
Digestion Method ◽  
Polluted River ◽  
Wet Digestion

Aliran Sungai Roomo telah tercemar oleh bahan-bahan organik terutama dari limbah domestik dan industri.Cemaran logam berat juga dipastikan ada dalam sungai tersebut.Logam berat ini masuk ke dalam sedimen dan biota yang hidup di lingkungan tersebut dan dapat terakumulasi pada seluruh bagian tubuhnya.Tujuan penelitian ini adalah untuk menentukan tingkat pencemaran logam Pb, Cd, dan Cu dalam air dan sedimen Sungai Roomo Gresik serta menganalisis biovailabilitas logam berat tersebut.Metode ekstraksi bertahap dan digesti basah digunakan untuk melakukan spesiasi dan ekstraksi logam dari sedimen serta konsentrasi logamnya diukur menggunakan Spektrofotometer Serapan Atom (AAS). Kandungan logam Pb, Cd, dan Cu dalam aliran sungai Roomo Gresik telah melebihi batas yang diperbolehkan, yaitu  berturut-turut 1,6038-7,8365 mg/L; 0,0251–0,0798 mg/L; dan 0,1709–0,2249 mg/L dalam air dan 213,7750–539,0763 mg/kg; 3,3467–39,7071 mg/kg; dan 36,9168-190,7079 mg/kg dalam sedimen. Pola spesiasi logam berat tersebut sebagai F1 atau fraksi EFLE (easily, freely, leachable, exchangeable), F2 (reducible), F3 (oxidisable), dan F4 (resistant) adalah sebagai berikut: F4 > F2 > F1 > F3 untuk Pb dan Cd, sedangkan Cu dengan pola F3 > F4 > F2 > F1. Logam Pb, Cd, dan Cu yang bioavailable berturut-turut 2,78-7,11%, 1,98-20,44%, dan 2,48-13,66%, sementara yang berpotensi bioavailable berturut-turut 10,05-16,81%; 9,41-54,44%; dan 15,18-94,19%. Logam Pb, Cd, dan Cu yang non bioavailable berturut-turut 79,53-84,22%, 25,11-86,04%, dan 1,84-80,67%. Dengan demikian, Sungai Roomo Gresik telah tergolong sebagai sungai yang tercemar. Kata kunci: biavailabilitas, logam berat, sedimen, spesiasi, sungai The Roomo River Stream has been polluted by organic materials which were mainly from domestic and industrial waste. Heavy metals were also ensured contaminated the river. These heavy metals enter sediments and can accumulate in the biota living in the river. This study was aimed to determine the level of pollution of Pb, Cd, and Cu metals in the water and sediments of the Roomo Gresik River and to analyze the biovability of these heavy metals. The sequential extraction and wet digestion method were used to perform a speciation and extraction of the metals from sediments. The concentration of the metals was measured by the use of Atomic Absorption Spectrophotometer (AAS). The contents of Pb, Cd, and Cu metals in the river were exceeded the allowed limit, which were 1.6038-7.8365 mg/L; 0.0251-0.0798 mg/L; and 0.1709-0.2249 mg/L, respectively in water and 213.7750-539763 mg/kg; 3.3467–39.7071 mg/kg; and 36.9168-190.7079 mg/kg, respectively in sediments. The pattern of heavy metal speciations as F1 or EFLE fraction (easily, freely, leachable, exchangeable), F2 (reducible), F3 (oxidizable), and F4 (resistant) were as follows: F4>F2>F1>F3 for Pb and Cd, whereas Cu with the pattern of F3>F4>F2>F1. The percentages of bioavailability of Pb, Cd, and Cu metals including readily biavailable were 2.78-7.11%, 1.98-20.44%, and 2.48-13.66%, potentially bioavailable were 10.05-16.81%, 9.41-54.44%, and 15.18-94.19%. Non-bioavailable were 79.53-84.22%, 25.11-86.04% and 1.84-80.67%, respectively. Therefore, the Roomo Gresik River has been classified as a polluted river. Keywords: bioavailability, heavy metals, river, sediment, speciation

scholarly journals Health and ecological risk assessment and simulation of heavy metal-contaminated soil of Tehran landfill

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 8080-8095
Author(s):  
Shahla Karimian ◽  
Sakine Shekoohiyan ◽  
Gholamreza Moussavi
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Heavy Metal ◽  
Human Health ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Contaminated Soil ◽  
Toxic Effects

The toxic effects of heavy metals in landfill soils have become a significant concern for human health.

scholarly journals Impact of Tsunami on the Heavy Metal Accumulation in Water, Sediments and Fish at Poompuhar Coast, Southeast Coast of India

2008 ◽  
Vol 5 (1) ◽  
pp. 16-22 ◽  
Author(s):  
P. Martin Deva Prasath ◽  
T. Hidayathulla Khan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Accumulation ◽  
Heavy Metal Accumulation ◽  
Mugil Cephalus ◽  
Atomic Absorption Spectrophotometer ◽  
Southeast Coast Of India ◽  
Southeast Coast ◽  
Before And After

Investigations on the accumulation of heavy metals (Zn, Cu, Fe, Mn, Co, Pb, Cd and Ni) in water, sediments and fish (Mugil cephalus) using Atomic Absorption Spectrophotometer at Poompuhar coast, lying along the southeast coast of India was studied before and after tsunami. Accumulation of heavy metals was observed in the order of Sediments > Fish > Water. In water, the order was found to be Mn > Fe > Zn > Cu > Ni > Cd > Co > Pb; Mn recorded a maximum of 506.9µ. L-1and Pb recorded a minimum of 0.006µ. L-1. In sediments, the order was Mn > Fe > Cu > Zn > Pb ≈Co ≈Cd ≈ Ni; Mn recorded a maximum of 851.1µg.g-1and a minimum of below detectable levels were found in Pb, Co, Cd and Ni. In fish, the order was found to be Fe > Zn > Mn > Cu > Ni > Co ≈ Pb ≈ Cd; Fe recorded a maximum of 529.13 µg. g-1and a minimum of below detectable levels were found in Pb and Cd.

scholarly journals Kombinasi rumput laut (Eucheuma cottonii) dan kerang hijau (Perna viridis) sebagai biofilter logam berat timbal (Pb)

DEPIK ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 151-155
Author(s):  
Dian Viva Aurora Mayori ◽  
Boedi Setya Rahardja ◽  
Suciyono Suciyono ◽  
Lailatul Lutfiyah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Uptake ◽  
Rapid Development ◽  
Coastal Region ◽  
Atomic Absorption Spectrophotometer ◽  
Perna Viridis ◽  
Heavy Metal Uptake ◽  
Improve Water Quality

The rapid development of the industry in the coastal region has increased the concentration of heavy metals in waters. Furthermore, efforts to improve water quality in reducing the concentration of these metals are biofilter. The biofilter used in this study was a combination of E. cottonii and P. viridis. The study used Complete Random Design (CRD), with 4 treatments 5 replications. Pb heavy metal content testing uses AAS (Atomic Absorption Spectrophotometer). The results showed that the best treatment was in P2 (p 0.05), with the combination of E. cottonii and P. viridis at 62.50 and 225 g. The effectiveness of Pb heavy metal uptake is influenced by the density of E. cottoni, but inversely proportional to the density of P. viridis. Furthermore, in high stocking densities, E. cottonii is more effective in absorbing heavy metals than P. viridis.Keywords: E. cottonii, P. viridis, Biofilter, lead (Pb) ABSTRAKPesatnya perkembangan industri di wilayah pesisir merupakan salah satu penyebab meningkatnya konsentrasi logam berat dalam perairan. Salah satu upaya dalam perbaikan kualitas air dalam menurunkan konsentrasi logam tersebut adalah dengan biofilter. Biofilter yang digunakan pada penelitian ini yaitu kombinasi E. cottonii dan P. viridis. Penelitian menggunakan Racangan Acak Lengkap (RAL), dengan 4 perlakuan 5 ulangan. Pengujian kandungan logam berat Pb menggunakan AAS (Atomic Absorption Spectrophotometer). Hasil penelitian menunjukkan bahwa perlakuan terbaik terdapat pada P2 (p 0.05), dengan kombinasi E. cottonii dan P. viridis sebesar 62,50 dan 225 g. Efektifitas penyerapan logam berat Pb dipengaruhi oleh kepadatan E. cottoni, akan tetapi berbanding terbalik dengan kepadatan P. viridis. Selanjutnya, dalam padat tebar yang tinggi, E. cottonii lebih efektif dalam menyerap logam berat dibandingkan P. viridis.Kata kunci: E. cottonii, P. viridis, Biofilter, Timbal (Pb)  

scholarly journals Verifikasi Metode Uji Arsen dalam Contoh Mainan Anak dengan Spektrofotometer Serapan Atom Generator Uap Hidrida (Method Verification of Assay Arsenic in Toy Sample with Absorption Atomic Spectrophotometer Hydrid Vapor Generator)

1970 ◽  
Vol 4 (2) ◽  
pp. 36-45
Author(s):  
Fahrizal Hazra ◽  
Susanti Pratiwi Purnama ◽  
Suri Mulyani Sari
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Correlation Coefficient ◽  
Limit Of Detection ◽  
Experimental Results ◽  
Atomic Absorption Spectrophotometer ◽  
Limit Of Quantitation ◽  
Precision And Accuracy ◽  
Vapor Generator

The safety of toys as one of important factors needs to be considered. It can be seen from the presence of heavy metals such as arsenic (As). The analysis of heavy metal arsenic in children's toys can use the verified SNI ISO 8124-3 : 2010 method. Verification activities are needed to verify that the laboratory is able to perform a test which is using such method, and the result are valid. Parameters used in this verification were linearity, limit of detection (LOD), limit of quantitation (LOQ), precision, and accuracy. Based on the verification result of Assay Arsenic in toys with Atomic Absorption Spectrophotometer Hydrid Vapor Generator (HVG), good liearity had a correlation coefficient (r) of 0.9993. The limit of detectin (LOD) and limit of quantitation (LOQ) obtained was 0.0113 mg/Kg and of 3.39%. The accuracy had a recovery value 97.66%. The experimental results showed that the Assay Arsenic in toys with Atomic Absorption Spectrophotometer Hydrid Vapor Generator (HVG) can be used as routine analysis.Keywords : arsenic, atomic absorption spectrophotometer, hydrid  vapor generator, verification

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