نتایج جستجو برای: trace element analysis

تعداد نتایج: 3007663  

2015
T. Li Y. Wang W. J. Li J. M. Chen T. Wang W. X. Wang

The concentrations and solubility of twelve trace elements in PM2.5 at Mt. Lushan, southern China, were investigated during the summer of 2011 and the spring of 2012. The average PM2.5 mass was 55.2± 20.1 μg m −3 during the observation period. Temporal variations of all trace elements including total and water-soluble fractions with several dust storm spikes in total fractions of Al and Fe were...

2009
B. C. Hahn S. M. McLennan N. J. Tosca R. J. Reeder

Introduction: The Mars Exploration Rovers have detected distinctive suites of evaporite minerals at the Martian surface precipitated from fluids derived from basaltic weathering under low pH conditions. Orbital spectroscopic observations have confirmed the global distributions of these materials. The formation and stability of evaporite assemblages have been well modeled at Meridiani Planum for...

2017
Dean E. Fletcher Angela H. Lindell Garrett K. Stillings Susan A. Blas J. Vaun McArthur

Constituents of coal combustion waste (CCW) expose aquatic organisms to complex mixtures of potentially toxic metals and metalloids. Multi-element trace element analyses were used to distinguish patterns of accumulation among 8 genera of dragonfly nymphs collected from two sites on a CCW contaminated coastal plain stream. Dragonfly nymphs are exceptional for comparing trace element accumulation...

Journal: :JNW 2007
Nobuyoshi Sato Minoru Uehara Koichiro Shimomura Hirobumi Yamamoto Ken'ichi Kamijo

As the result of establishment of brands for some farming districts in Japan, it is a big social issue that agricultural products of which geographical origins are camouflaged. To solve this problem, we have proposed a distributed system that identifies cultivated places of vegetables by using their trace element content as coresearch with agricultural chemists. This system records trace elemen...

Journal: :Protocol Exchange 2015

Journal: :British Journal of Nutrition 1982

Nahid Mashkouri Najafi

A combined electrodeposition-ETAAS technique has been applied to the analysis of Pb, Cd, Co, Ni, Cr and Mn in biological samples in order to overcome interferences and to minimize sample pretreatment. It requires minimal sample preparation with the electrolysis process aiding partial decomposition of the organic matrix, adequate for the release and deposition of trace elements. In an initia...

Journal: :Journal of Research of the National Bureau of Standards 1986

Journal: :GEOCHEMICAL JOURNAL 1994

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