ABSTRACT

Đề tài: Nghiên cứu xác định sự nhiễm bẩn các dạng tồn tại của các ion As-3+, As-5+, Sb-3+ và Sb-5+ trong mẫu nước ngầm ở Tỉnh Lâm Đồng
Chủ nhiệm: ThS. Nguyễn Giằng

 

The project describes hydride generation atomic absorption spectrometry techniques for determination of arsenic (III), total arsenic, antimony (III) and total antimony concentration in water sample by investigating type and concentration of acide and sodium tetrahydroborate concentration.

The optimal conditions for determination of arsenic (III) were: 2% (m/v) citric acide and 2%(m/v) sodium tetrahydroborate. The same paramaters for determinaion of arsenic (V) were: 4N of HCl and 2%(m/v) of sodium tetrahydroborate in 10% (m/v) of KI

The optimal conditions for determination of antomony (III) were: 2% (m/v) citric acide and 2%(m/v) sodium tetrahydroborate. The same paramaters for determination of antimony (V) were: 6 N of HCl and 2%(m/v) sodium tetrahydroborate in 10% (m/v) of KI.

Interference from ions on the analysis for arsenic (III), total arsenic, antimony (III) and total antimony were also investigated.

The sensitivity of this method was estimated to be 0.001ppm, 0.002ppm, 0.002ppm and 0.003ppm for As3+, As3+,5+, Sb3+ and Sb3+,5+  respectively.