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- W967079418 abstract "A solid-state hydride generation method for the determination of arsenic is introduced at μg L -1 levels by atomic absorption spectrometry. Arsenic(III) hydride was generated at 48°C using solid sodium borohydride and solid tartaric acid. The calibration curves for As 3+ standard solutions had two linear ranges from 0.5 to 25 μg L -1 and from 25 to 600 μg L -1 at the wavelength of 193.7 nm. The relative standard deviation for nine replicate analyses of 100 μg L -1 and 5 μg L -1 of As 3+ were 2.1 and 3.6%, respectively. The total species of arsenic i.e. As(III) and As(V), were also determined by the addition of a mixture of glycine, and L-cystein (as pre-reducing agent) to the mixture of solid sodium borohydride and solid tartaric acid. The difference between the total arsenic and As 3+ was related to the amount of As 5+ . The calibration curve of As 5+ standard solutions was linear from 32 to 600 μg L -1 at the same wavelength. Limit of detection was 0.17 μg L -1 for total species of As (4.25 pg As in 25 μL). The reliability of the method was evaluated by determining arsenic content in different types of surface water samples and cosmetic products (sun screen creams)." @default.
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- W967079418 date "2009-01-01" @default.
- W967079418 modified "2023-09-28" @default.
- W967079418 title "Solid reagents for hydride generation atomic absorption spectrometric determination of inorganic arsenic species in environmental water and cosmetic products" @default.
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