نتایج جستجو برای: nomoto and shimadzu atomic absorption method
تعداد نتایج: 17079694 فیلتر نتایج به سال:
Three certified samples of different matrices (Soil-5, SL-1/IAEA and SARM-4/SABS) were quantitatively analysed by energy dispersive X-ray fluorescence with radioisotopic excitation. The observed errors were about 10-20% for the majority of the elements and less than 10% for Fe and Zn in the Soil-5, Mn in SL-1, and Ti, Fe and Zn in SARM-4 samples. Annular radioactive sources of Fe-55 and Cd-109 ...
background and objectives: heavy metals such as cadmium and lead are the most important toxins spreading through various ways like water, soil, and air in nature and easily enter human food chain. it is essential to determine the cumulative and harmful effects of these metals in nutrients, especially in cow milk because it is a unique source of food for all ages and it contains both essential a...
Kozo Sadakane, Akira Arai, Wako Aoki, Nobuo Arimoto, Masahide Takada-Hidai, Takashi Ohnishi, Akito Tajitsu, Timothy C. Beers, Nobuyuki Iwamoto, Nozomu Tominaga, Hideyuki Umeda, Keiichi Maeda, and Ken’ichi Nomoto Astronomical Institute, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582 National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 Liberal Arts Education Cen...
abstract soil contamination by heavy metals is yet one of the most important environmental concerns. among heavy metals, nickel and cadmium have dangerous influences on human, animals and plants. the objective of this study was to derive a new model for simultaneous phytoextraction of ni and cd from contaminated soils. consequently, a macroscopic model was derived by combining yield reduction f...
a novel and selective method for the fast determination of trace amounts of zn(ii)ions in water samples has been developed. the first additional carbonyl and carboxyl functionalized-nano graphene (spfnano graphene). the presence of additional carbonyl and carboxyl groups located at the edge of the sheets makes go sheets strongly hydrophilic, allowing them to readily swell and disperse in water...
Monitoring of mercury in environmental samples, with its proven toxicity on the food chain, requires sensitive and accurate analytical techniques. In this study, two methods for identification and quantification of total mercury in biological and sediment samples are compared: i) dry ash preparation and subsequent established procedures for Combustion Atomic Absorption Spectrometry, (AMA 254) ...
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