scholarly journals Kajian Awal Fitoremediasi Merkuri Pada Caulerpa serrulata dan Halimeda macroloba dari Perairan Teluk Totok

2015 ◽  
Vol 3 (2) ◽  
pp. 8
Author(s):  
Dedy Octavian Siahaan ◽  
Desy M. H. Mantiri ◽  
Antonius Rumengan
Keyword(s):  
Environmental Protection ◽  
Mass Spectroscopy ◽  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Protection Agency ◽  
Inductively Coupled ◽  
United State ◽  
Icp Ms

Penelitian ini dilakukan dengan tujuan untuk mengetahui kemampuan alga spesies Caulerpa serrulata dan Halimeda macroloba sebagai agen fitoremediator merkuri di perairan laut. Analisis merkuri pada sedimen dan jaringan alga berdasarkan metode standar United State Environmental Protection Agency (USEPA) yang dilakukan di Water Laboratory Nusantara (WLN) dengan menggunakan Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) instrument. Hasil penelitian memperlihatkan bahwa Caulerpa serrulata mampu mengabsorbsi merkuri sebanyak 0,20 ppm dan Halimeda macroloba mampu mengabsorbsi sebanyak 0,11 ppm dari perairan Teluk Totok. Selain itu kemampuan Caulerpa serrulata dan Halimeda macroloba mentoleransi kadar merkuri yang tinggi di sedimen tempat alga tersebut tumbuh bisa menjadi pertimbangan bahwa alga tersebut memiliki potensi untuk dapat digunakan sebagai salah satu organisme fitoremediaotor merkuri di perairan laut.

Kajian Awal Fitoremediasi Merkuri Pada Caulerpa serrulata dan Halimeda macroloba dari Perairan Teluk Totok

2015 ◽  
Vol 3 (2) ◽  
pp. 8
Author(s):  
Dedy Octavian Siahaan ◽  
Desy M. H. Mantiri ◽  
Antonius Rumengan
Keyword(s):  
Environmental Protection ◽  
Mass Spectroscopy ◽  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Protection Agency ◽  
Inductively Coupled ◽  
United State ◽  
Icp Ms

Penelitian ini dilakukan dengan tujuan untuk mengetahui kemampuan alga spesies Caulerpa serrulata dan Halimeda macroloba sebagai agen fitoremediator merkuri di perairan laut. Analisis merkuri pada sedimen dan jaringan alga berdasarkan metode standar United State Environmental Protection Agency (USEPA) yang dilakukan di Water Laboratory Nusantara (WLN) dengan menggunakan Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) instrument. Hasil penelitian memperlihatkan bahwa Caulerpa serrulata mampu mengabsorbsi merkuri sebanyak 0,20 ppm dan Halimeda macroloba mampu mengabsorbsi sebanyak 0,11 ppm dari perairan Teluk Totok. Selain itu kemampuan Caulerpa serrulata dan Halimeda macroloba mentoleransi kadar merkuri yang tinggi di sedimen tempat alga tersebut tumbuh bisa menjadi pertimbangan bahwa alga tersebut memiliki potensi untuk dapat digunakan sebagai salah satu organisme fitoremediaotor merkuri di perairan laut.

Geospeciation of arsenic using MINTEQA2 for a post-mining lake

2006 ◽  
Vol 54 (11-12) ◽  
pp. 289-299 ◽  
Author(s):  
S.A. Sari ◽  
Z. Ujang ◽  
U.K. Ahmad
Keyword(s):  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
The United States ◽  
Protection Agency ◽  
High Solubility ◽  
Inductively Coupled ◽  
Ph Values ◽  
Mining Lake ◽  
Icp Ms ◽  
Iron And Manganese

The objective of this study was to investigate the cycling of arsenic in the water column of a post-mining lake. This study is part of a research project to develop health risk assessment for the surrounding population. Inductively Coupled Plasma-Mass Spectrophotometer (ICP-MS) and Capillary Electrophoresis (CE) have been used to analyze the total amount and speciation, respectively. A computer program, called MINTEQA2, which was developed by the United States Environmental Protection Agency (USEPA) was used for predicting arsenic, iron, and manganese as functions of pH and solubility. Studying the pH values and cycle of arsenic shows that the percentage of bound arsenate, As(V) species in the form of HAsO−4 increases with range pH from 5 to 7, as well as Fe(II) and Mn(II). As expected phases of arsenic oxides are FeAsO4 and Mn3(AsO4), as a function of solubility, however none of these phases are over saturated and not precipitated. It means that the phases of arsenic oxides have a high solubility.

scholarly journals KAJIAN KUALITAS AIR DAN SEDIMEN DASAR SUNGAI KUTAI LAMA-KAB. KUTAI KARTANEGARA SEBAGAI PERTIMBANGAN AWAL RENCANA PENGERUKAN

2017 ◽  
Vol 14 (1) ◽  
pp. 24 ◽  
Author(s):  
Mardi Wibowo
Keyword(s):  
Environmental Protection ◽  
Standard Method ◽  
Environmental Protection Agency ◽  
Protection Agency ◽  
United State

Rona lingkungan awal kualitas air sungai dan sedimen dasar sangat diperlukan sebelum dilakukan pengerukan sebagai bahan untuk memperkirakan dampak lingkungan yang muncul akibat kegiatan pengerukan. Pengambilan sampel air dilakukan dengan mengikuti Standard Method dari APHA-AWWA (1995) dan dianalisis di laboratorium dengan berpedoman pada Peraturan Pemerintah No. 82 Tahun 2001 Tentang Pengelolaan Kualitas Air dan Pengendalian Pencemaran Air. Berdasarkan hasil analisis dan kajian ini diketahui bahwa kualitas air sungai di Kutai Lama masih tergolong baik (berdasarkan baku mutu air Kelas I PeraturanPemerintah No. 82 Tahun 2001). Beberapa parameter yang melebihi baku mutu air Kelas I PP No. 82 Tahun 2001 adalah BOD, COD, DO, Besi (Fe), deterjen sebagai MBAS. Khusus untuk kandungan logam berat semuanya masih memenuhi baku mutu yang telah ditetapkan. Kualitas sedimen dasar: konsentrasi logam mangan (Mn) sangat tinggi jika dibandingkan dengan konsentrasi logam-logam lainnya. Konsentrasi logam berat yang ditemukan dalam jumlah besar berikutnya adalah besi (Fe), seng (Zn), tembaga (Cu) dan yang terkecil adalah timbal (Pb).Berdasarkan standar baku mutu sedimen yang dibuat oleh United State Environmental Protection Agency (USEPA) dan Kementerian Lingkungan Kanada, semua konsentrasi logam-logam berat di daerah kajian termasuk dalam kategori tercemar berat.

scholarly journals Elemental Impurity Analysis of Mercuric Iodide by Icp/Ms

1993 ◽  
Vol 302 ◽  
Author(s):  
Eilene S. Cros ◽  
Eugene Mroz ◽  
José A. Olivares
Keyword(s):  
Mass Spectroscopy ◽  
Inductively Coupled Plasma ◽  
Mercuric Iodide ◽  
Inductively Coupled ◽  
Impurity Analysis ◽  
Icp Ms ◽  
Contamination Levels

ABSTRACTA method has been developed to analyze mercuric iodide (HgI2) for elemental contamination using Inductively Coupled Plasma/Mass Spectroscopy (ICP/MS). This paper will discuss the ICP/MS method, the effectiveness of purification schemes for removing impurities from Hgl2, as well as preliminary correlations between HgI2 detectorperformance and elemental contamination levels.

scholarly journals Heavy Metals in Frozen and Canned Marine Fish of Korea

2010 ◽  
Vol 2 (3) ◽  
pp. 549 ◽  
Author(s):  
M. M. Islam ◽  
S. Bang ◽  
Kyoung-Woong Kim ◽  
M. K. Ahmed ◽  
M. Jannat
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Marine Fish ◽  
Mass Spectroscopy ◽  
Potential Risk ◽  
Inductively Coupled Plasma ◽  
Metal Contaminants ◽  
Inductively Coupled ◽  
Intake Level ◽  
Icp Ms

Heavy metal contaminants in fish are of particular interest because of the potential risk to humans who consume them. The edible muscles of eight different species of fishes were analyzed by ICP-MS (Inductively Coupled Plasma Mass Spectroscopy) for heavy metals, collected from Market in Gwangju, Korea during April-May in 2008. The concentrations of Hg, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn varied between 0.24±0.007 - 0.01±0.001, 44.54±5.69 - 1.23±0.20, 0.13±0.05 – ND (not detected), 1.32±0.47 - 0.09± 0.02, 3.13±2.53 - 0.63±0.06, 107.17±28.02 - 11.27±1.56, 12.38±1.23 - 0.25±0.02, 1.025±1.41 - 0.12±0.09, 0.74±0.28 - 0.05±0.03 and 80.30±17.09 - 22.35±6.89 mg/kg, respectively. The concentrations of arsenic and nickel exceeded the maximum allowable intake level. Keywords: Heavy metals; Marine fish; Korea. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i3.4667              J. Sci. Res. 2 (3), 551-557 (2010)

Clinical Evaluation of a Chairside Amalgam Separator to Meet Environmental Protection Agency Dental Wastewater Regulatory Compliance

2020 ◽  
Vol 45 (2) ◽  
pp. 151-162
Author(s):  
DS Olivera ◽  
MT Morgan ◽  
SN Tewolde ◽  
EC Botts ◽  
FP Horvath ◽  
...  
Keyword(s):  
Service Life ◽  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Inductively Coupled Plasma ◽  
Dental Treatment ◽  
Regulatory Compliance ◽  
Protection Agency ◽  
Treatment Facility ◽  
Retention Efficiency ◽  
The Mean

SUMMARY Objectives: The aim of this study was to evaluate the performance of a commercially available chairside amalgam separator (CAS) in a clinical setting in which a relatively high number of amalgam restorations are placed. Performance parameters investigated included service life, amalgam collected, mercury concentrations in effluent, and solids retention efficiency. Methods and Materials: CASs were tested per International Organization of Standardization (ISO) 11143:2008 prior to installation in a military dental treatment facility and after removal from service (n=4) in order to confirm compliance with the recently enacted United States Environmental Protection Agency (EPA) Effluent Limitations Guidelines and Standards for the Dental Category. During the units' time in service, biweekly effluent grab samples were collected from the high-volume evacuation system of each chair (n=6) and analyzed for total mercury concentration by inductively coupled plasma mass spectrometry (ICP-MS). The mean total accumulated solids at the end of service life (n=6) was determined for potential design optimization. The service life expectancy in a military dental treatment facility was determined in terms of calendar and workdays. Procedural data were collected to determine the daily mean number of amalgam surfaces placed during the service life of each chairside amalgam separator (n=9). Results: The CAS evaluated met minimum EPA compliance requirements when used in a military dental treatment facility. The solids removal efficiency at the end of service life was 99.82% ± 0.14% (n=4). The mean service life (n=8) was 131.6 ± 45.1 calendar days (67.1±37.6 workdays). Effluent mercury concentrations ranged from 0.05 to 11.93 mg/L. Total solids accumulated in each CAS (n=6) at the end of service life was 195.4 ± 63.4 g. The mean number of amalgam surfaces placed per workday during the service life span of each CAS was 8.4 ± 1.4.

scholarly journals Inorganic Geochemistry of Crude Oils of Northern Eurasia after ICP-MS Data as Clear Evidence for Their Deep Origin

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 48
Author(s):  
Kirill Svyatoslavich Ivanov ◽  
Yuriy Viktorovich Erokhin ◽  
Daniil Aleksandrovich Kudryavtsev
Keyword(s):  
Rare Earth ◽  
Mass Spectroscopy ◽  
Inductively Coupled Plasma ◽  
Limit Of Detection ◽  
Northern Eurasia ◽  
Inductively Coupled ◽  
Petroleum Systems ◽  
Icp Ms ◽  
Microelement Composition ◽  
Light Lanthanides

The emergence of mass-spectroscopy with inductively-coupled plasma (ICP-MS) made it possible to study the microelement composition of crude oil and its derivatives with the limit of detection (LOD) at the ppt level. We have studied the crudes from West Siberian (Shaimsky, Sredneobsky and Oktyabrsky regions) and Tatarstan Romashinskoye oilfields with the ICP-MS method to detect 50 rare, rare-earth, and other microelements. The elemental composition is reasonably comparable to their concentrations in ultrabasites whereas the contents of most of the elements are low to the limit. On the diagrams of rare-earth elements, one can see the prevalence of light lanthanides and positive europium anomaly. Increased content of platinoids was found in Tatar oils; in some cases, the concentration of ruthenium reaches 0.06 g/t. The study shows that studied crudes have a specific microelement composition. Based on the elevated contents of transit elements and platinoids, a conclusion was made about the “ultrabasic” geochemical–metallogenic specialization of studied petroleum systems and the assumption about its origin was proposed.

Sign in / Sign up

Export Citation Format

Share Document