Reconstructing Early Industrial Contributions to Legacy Trace Metal Contamination in Southwestern Pennsylvania

2017 ◽  
Vol 51 (8) ◽  
pp. 4173-4181 ◽  
Author(s):  
Robert J. Rossi ◽  
Daniel J. Bain ◽  
Aubrey L. Hillman ◽  
David P. Pompeani ◽  
Matthew S. Finkenbinder ◽  
...  
Keyword(s):  
Trace Metal ◽  
Metal Contamination ◽  
Trace Metal Contamination ◽  
Southwestern Pennsylvania

Method of Detecting Trace Metal Contamination in Thick-Film SOI Device

2005 ◽  
Author(s):  
Yasunori Goto ◽  
Hiroomi Eguchi ◽  
Masaru Iida
Keyword(s):  
Trace Metal ◽  
Thick Film ◽  
Metal Contamination ◽  
Semiconductor Device ◽  
Trace Element Analysis ◽  
Silicon On Insulator ◽  
Element Analysis ◽  
Trace Metal Contamination ◽  
Trace Metal Elements ◽  
Output Characteristics

Abstract In the automotive IC using thick-film silicon on insulator (SOI) semiconductor device, if the gettering capability of a SOI wafer is inadequate, electrical characteristics degradation by metal contamination arises and the yield falls. At this time, an automotive IC was made experimentally for evaluation of the gettering capability as one of the purposes. In this IC, one of the output characteristics varied from the standard, therefore failure analysis was performed, which found trace metal elements as one of the causes. By making full use of 3D perspective, it is possible to fabricate a site-specific sample into 0.1 micrometre in thickness without missing a failure point that has very minute quantities of contaminant in a semiconductor device. Using energy dispersive X-ray, it is possible to detect trace metal contamination at levels 1E12 atoms per sq cm. that are conventionally detected only by trace element analysis.

Impact of municipal solid waste dumpsites on trace metal contamination levels in the surrounding area: a case study in West Africa, Abidjan, Cote d’Ivoire

2021 ◽  
Author(s):  
Naminata Sangaré Soumahoro ◽  
N’guessan Louis Berenger Kouassi ◽  
Koffi Marcellin Yao ◽  
Edith Kouassi Kwa-Koffi ◽  
Aka Marcel Kouassi ◽  
...  
Keyword(s):  
West Africa ◽  
Trace Metal ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Cote D'ivoire ◽  
Metal Contamination ◽  
Surrounding Area ◽  
Trace Metal Contamination ◽  
Contamination Levels

Assessment of trace metal contamination and bioavailability in an Environmental Protection Area: Guaxindiba estuarine system (Guanabara Bay, Rio de Janeiro Brazil)

2020 ◽  
Vol 35 ◽  
pp. 101143
Author(s):  
Michele Fernandes ◽  
Estefan Monteiro da Fonseca ◽  
Leonardo da Silva Lima ◽  
Susanna Eleonora Sichel ◽  
Jessica de Freitas Delgado ◽  
...  
Keyword(s):  
Trace Metal ◽  
Environmental Protection ◽  
Metal Contamination ◽  
Rio De Janeiro ◽  
Estuarine System ◽  
Guanabara Bay ◽  
Trace Metal Contamination ◽  
Environmental Protection Area ◽  
Protection Area

Assessment of trace metal contamination and exchange between water and sediment systems in the To Lich River in inner Hanoi, Vietnam

2014 ◽  
Vol 73 (7) ◽  
pp. 3925-3936 ◽  
Author(s):  
Nguyen Thi Thuong ◽  
Minoru Yoneda ◽  
Yoko Shimada ◽  
Yasuto Matsui
Keyword(s):  
Trace Metal ◽  
Metal Contamination ◽  
Trace Metal Contamination ◽  
Water And Sediment

scholarly journals Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil

2007 ◽  
Vol 18 (6) ◽  
pp. 1194-1206 ◽  
Author(s):  
Cassia O. Farias ◽  
Claudia Hamacher ◽  
Angela de Luca R. Wagener ◽  
Reinaldo C. de Campos ◽  
José M. Godoy
Keyword(s):  
Trace Metal ◽  
Metal Contamination ◽  
Rio De Janeiro ◽  
Guanabara Bay ◽  
Mangrove Sediments ◽  
Trace Metal Contamination

scholarly journals Analysis of Trace Metal Contamination in Pahang River and Kelantan River, Malaysia

2019 ◽  
Vol 266 ◽  
pp. 04003 ◽  
Author(s):  
Norpadzlihatun Manap ◽  
Kavitha Sandirasegaran ◽  
Noor Shahifah Syahrom ◽  
Amnorzahira Amir
Keyword(s):  
Trace Metals ◽  
Trace Metal ◽  
Metal Contamination ◽  
Sediment Quality ◽  
Primary Objective ◽  
Trace Metal Concentration ◽  
Trace Metal Contamination ◽  
Quality Guidelines ◽  
Fish Samples ◽  
Negative Impacts

The primary objective of this study is to determine trace metal contamination in environmental samples obtained from Pahang River and Kelantan River, Malaysia which may help to identify the risk of sustainable dredging in these areas. This research also proceeds to compare the trace metal concentration with the National Water Quality Standards of Malaysia, Interim Canadian Sediment Quality Guidelines and Malaysian Food Act 1983 to determine its limits and risks. Samples of water, sediment, snails and fishes were collected and analyzed for As, Cu, Cd, Cr, Fe, Pb, Ni, Mn, and Hg by using atomic absorption spectrophotometer. It was found that the concentration of trace metals namely As, Cu, Cd, Cr, Pb, Ni, and Hg in river water, sediment, snail and fish samples in Pahang River were lower than the maximum allowable limits, except for Fe and Mn. In Kelantan River, the concentration of trace metals indicating that it is contaminated with Fe, Mn, Pb, Cr, Cu, Hg, and As as all trace metals exceeded the maximum allowable limits. Negative impacts may arise, and the river may contaminate more in future if there is no proper management to tackle this issue during execution of dredging activities.

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