scholarly journals Evaluation and Comparison between a Conventional Acid Digestion Method and a Microwave Digestion System for Heavy Metals Determination in Mentha Samples by ICP-MS.

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Bandar Alsehli
Keyword(s):  
Heavy Metals ◽  
Microwave Digestion ◽  
Acid Digestion ◽  
Digestion Method ◽  
Icp Ms ◽  
Microwave Digestion System

Evaluation of heavy metals content in the canned/packed fruit juices from local and imported origin in Lahore, Pakistan

2021 ◽  
Author(s):  
Nazeefa Fatima ◽  
Munazza Khan ◽  
Muhammad Shuaib Kabeer
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Fruit Juices ◽  
Human Consumption ◽  
Acid Digestion ◽  
Digestion Method ◽  
Mean Values ◽  
Nutritive Values ◽  
The Mean ◽  
Mean Concentration

This study was conducted to determine the mean concentration of heavy metals such as lead (Pb), copper (Cu), zinc (Zn), chromium (Cr), manganese (Mn), nickel (Ni), selenium (Se), magnesium (Mg), and iron (Fe) in canned/packed fruits juices, collected from various stores in Lahore in a period of three months. These juices were categorized into four groups; local packed and canned and also imported packed and canned products. Every group consisted of ten samples. By using the di-acid digestion method, the collected samples were digested and analyzed under Atomic Absorption Spectrophotometer (AAS). The results indicated that the mean values of 7 out of 9 tested heavy metals including Pb, Mg, Ni, Fe, Cr, Se and Mn were above permissible limits (set by WHO) in all four understudy groups. Therefore, it was concluded that commercially available fruit juices are not all safe according to their heavy metals content for the human consumption despite their nutritive values.

scholarly journals Elemental analysis of coffee: a comparison of ICP-MS and AAS methods 

2014 ◽  
Vol 32 (No. 4) ◽  
pp. 354-359 ◽  
Author(s):  
M. Jarošová ◽  
D. Milde ◽  
M. Kuba
Keyword(s):  
Inductively Coupled Plasma ◽  
Microwave Digestion ◽  
Absorption Spectrometry ◽  
Mineral Nutrients ◽  
Multivariate Statistical Methods ◽  
Multivariate Statistical ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Microwave Digestion System

We determined the mineral nutrients and toxic elements (Ca, Cu, Fe, Mg, Zn, Cd, Cr, Mn, Ni, and Pb) in five types of coffee by atomic absorption spectrometry and inductively coupled plasma mass spectrometry. The decomposition of the samples took place in a microwave digestion system with HNO<sub>3</sub> and H<sub>2</sub>O<sub>2</sub> reagents. Partial validation of the method was performed by using the certified reference material (NCS ZC 73014). Univariate and multivariate statistical methods were used to compare both the coffee samples and the techniques used. No significant differences were found between two used methods. Significant differences occurred between the coffee samples but only the application of multivariate statistics helps to distinguish among samples from different locations.

Determination of Heavy Metals in Wheat and Barley Grains Using ICP-MS/MS

2020 ◽  
Vol 103 (5) ◽  
pp. 1277-1281
Author(s):  
Tamer M A M Thabit ◽  
Shokr Abdelsalam Shokr ◽  
Dalia I H Elgeddawy ◽  
Medhat A H El-Naggar
Keyword(s):  
Heavy Metals ◽  
Acid Digestion ◽  
Validation And Verification ◽  
European Origin ◽  
Three Samples ◽  
Icp Ms ◽  
Two Samples ◽  
Low Levels ◽  
Barley Grains

Abstract Wheat and barley grains are two of the most important nutritional grains for humans and animals and they play an essential role in the nutritional cycle by different ratios according to people's nutritional habits. This work aimed to monitor ten of the most important heavy metals in some European-origin wheat and barley grains during the season of 2018. The measured elements, Al, As, Cd, Co, Cr, Hg, Mo, Ni, Pb, and V, are of importance ecologically and biologically and may be involved in many health disorders affecting the human body. Moisture, protein, and specific grain weights were checked. Samples were digested using microwave acid digestion and the elements measured with ICP-MS/MS in He mode to increase sensitivity, lower the background, and avoid interference. Method validation and verification were carried out through spiking at two levels (2.0 and 10 ppb), then RSD, LOD, and LOQ were calculated. Recoveries were &gt;97% for all elements at both levels with an RSD of &lt;7.6%. Results revealed that As, Cd, Hg, and Pb were not detected in most wheat and barley samples, whereas Cd was detected in one sample of Ukrainian wheat and two samples of Estonian barley (but in very small traces). Pb was detected in three samples of Polish wheat (in very small traces). Al, Mo, and Ni were detected in some samples of wheat and barley of all origins, whereas other elements were at very low levels considered to be negligible concentrations.

scholarly journals Assessment of Heavy Metal Residues in Excreta of Rock Pigeon (Columba Livia) and Domestic Pigeon (Columba livia Domestica) in Faisalabad, Punjab, Pakistan

2021 ◽  
Vol 2 (2) ◽  
pp. 219-228
Author(s):  
Shahid Hafeez Khan ◽  
Amjad Saeed ◽  
Tanveer Hussain ◽  
Junaid Naseer ◽  
Ghulam Yasin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Industrial Waste ◽  
Columba Livia ◽  
Acid Digestion ◽  
Fresh Weight ◽  
High Concentration ◽  
Digestion Method ◽  
Domestic Pigeon ◽  
Rock Pigeon

Pollution is the main cause that effects the environment in a degradable condition. For the presence of heavy metals in the atmosphere birds are considered as tremendous bio indicator. Blue pigeon and domestic pigeon (Coloumba livia) of Faisalabad are selected to examine the level of heavy metals including Manganese (Mn), zinc (Zn), Cobalt (Co), lead (Pb) cadmium (Cd) and Copper (Cu) in several tissues such as (heart, lungs, bones, muscles and feathers. Six adult birds were collected rural, urban and residential and traffic areas of Faisalabad. After collection of sample fresh weight will be measured of each sample, then digestion of sample was done by conventional acid digestion method and digested samples were analyzed in the lab by Atomic Absorption Spectrophotometer for the determination of heavy metals.  It was concluded that accumulation of heavy metals in the birds depends upon the environmental conditions. Our result showed that concentration of heavy metals more in rock pigeon as compared to domestic pigeon which may be due to more exposure of industrial waste to rock pigeon. It has inferred from our study that high concentration of heavy metals in the excreta of rock pigeon was due to its high trophic level in food chain.

scholarly journals Gold determination in soil by ICP-MS: comparison of sample pretreatment methods

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaodan Tang ◽  
Bing Li ◽  
Jilong Lu ◽  
Hongyan Liu ◽  
Yuyan Zhao
Keyword(s):  
Inductively Coupled Plasma ◽  
Selective Adsorption ◽  
Microwave Digestion ◽  
Sample Pretreatment ◽  
Electric Heating ◽  
Mining Area ◽  
Digestion Method ◽  
Laboratory Procedure ◽  
Gold Determination ◽  
Icp Ms

Abstract At present, the direct gold determination in geological samples by inductively coupled plasma mass spectrometry (ICP-MS) is still an arduous challenge due to both spectral and background interferences. It is very important and necessary to study the pretreatment processes; therefore, the polyurethane foam treatment and sample digestion methods are explored and compared here. The experimental results showed that the gold adsorption rate of treated foam was significantly improved as the impurities in the foam were cleaned up, and the potential difference of the liquid membrane was increased. Meanwhile, the combination of the foam enrichment and thiourea desorption achieved the selective adsorption and desorption of gold ions, eliminated the interference of coexisting ions, and perfected the detection limits. Compared with the traditional electric heating plate digestion method, microwave digestion, a closed digestion method, had the advantages of less sample and reagent dosage, short time consumption, high degree of automation, thorough digestion, good security, and environmental friendliness and met the requirements of green chemistry development. The proposed microwave digestion-foam enrichment-thiourea desorption-ICP-MS determination method was applied to the gold test in soil samples of the actual gold mining area. It has the great potential as a routine laboratory procedure.

scholarly journals Investigation of Heavy Metal Contamination in Fishes from Passur River near the Sundarbans Mangroves of Bangladesh

2017 ◽  
Vol 10 (1) ◽  
pp. 21-24
Author(s):  
MS Islam ◽  
SC Shil ◽  
MH Kabir ◽  
ME Hoq
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Microwave Digestion ◽  
Penaeus Monodon ◽  
Aquatic Life ◽  
Port Area ◽  
The Government ◽  
Microwave Digestion System

The study was conducted to investigate the heavy metal contamination in fishes and shrimps from the Passur River near the world famous Sundarban mangroves located in the southwestern part of Bangladesh, during the period from January to June 2013. The fish (Liza parse) and shrimp (Penaeus monodon) samples were collected from two stations as St-1 (Katakhali-1 km upper from port area- upstream) and St-2 (Amtola-1 km lower from port area- downstream) monthly for three months in January (winter), March (pre monsoon) and May (Monsoon). Before analysis, a bit of muscle, the whole liver and two gill arches from each fish and shrimp were removed. Samples of tissues from each fish and shrimp were removed, weighed and dried. A microwave digestion system was used to prepare the samples for analysis. After digestion residue diluted with 25 ml 2.5% HNO3. The water used was deionized and distilled. The metal analyses of samples (Cd, Cr, Cu, Pb and Zn) were carried out by using UNICAM-929 atomic absorption spectrophotometer (AAS) in SGS Bangladesh Limited, Dhaka-1205, Bangladesh. Among the heavy metals studied Cd, Cr, Cu, Pb and Zn were detected in fish and shrimp species were within acceptable limits by FAO standards. The results of this study indicated that a general absence of serious pollution in the Passur River is due to heavy metals; whereas the concentrations of elements found could mainly be attributed to geological sources. In this regard, to maintain the water and sediment qualities as well as the sound and safe aquatic life of the river need proper monitoring and management by the relevant authorities of the Government of Bangladesh.J. Environ. Sci. & Natural Resources, 10(1): 21-24 2017

Simultaneous analysis of 21 elements in foodstuffs by ICP-MS after closed-vessel microwave digestion: Method validation

2011 ◽  
Vol 24 (1) ◽  
pp. 111-120 ◽  
Author(s):  
Sandrine Millour ◽  
Laurent Noël ◽  
Ali Kadar ◽  
Rachida Chekri ◽  
Christelle Vastel ◽  
...  
Keyword(s):  
Method Validation ◽  
Microwave Digestion ◽  
Simultaneous Analysis ◽  
Closed Vessel ◽  
Digestion Method ◽  
Icp Ms

A rapid acid digestion method with ICP-MS detection for the determination of selenium in dry sediments

2005 ◽  
Vol 551 (1-2) ◽  
pp. 207-212 ◽  
Author(s):  
J. Pinho ◽  
J. Canário ◽  
R. Cesário ◽  
C. Vale
Keyword(s):  
Acid Digestion ◽  
Digestion Method ◽  
Ms Detection ◽  
Icp Ms ◽  
Dry Sediments

Determination of Heavy Metals in Moringa oleifera Capsules by ICP-MS

2014 ◽  
Vol 1060 ◽  
pp. 231-234
Author(s):  
Chutima Limmatvapirat ◽  
Sontaya Limmatvapirat ◽  
Juree Charoenteeraboon ◽  
Thawatchai Phaechamud
Keyword(s):  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
Moringa Oleifera ◽  
Acid Digestion ◽  
Inductively Coupled ◽  
Permissible Limits ◽  
Normal Ranges ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Moringa oleifera Lam. leaf capsules collected from markets in Nakhon Pathom, Thailand were determined for 11 heavy metals (Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn) by inductively coupled plasma-mass spectrometry (ICP-MS) using acid digestion for sample preparation. The concentrations of Al, As, Cr, Cu and Hg in all samples of M. oleifera capsules were found within permissible limits and normal ranges. In contrast, Fe, and Zn concentrations in all samples were higher than permissible limits. Furthermore, the concentrations of Cd, Mn, Ni, and Pb in some samples were higher than permissible limits and normal ranges. The presence of elevated levels of Cd, Fe, Mn, Ni, Pb, and Zn in M. oleifera capsules is a serious matter of concern. Therefore, it is important that doctors and consumers are aware of this matter especially during the routine taking of M. oleifera capsules.

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