Details

Autor(en) / Beteiligte

• Li, Jing
• Lang, Chun-Yan
• Ma, Ling-Ling
• Xu, Dian-Dou
• Zheng, Lei
• Lu, Yu-Nanz
• Cui Li-Rui
• Zhang, Xiao-Meng

Titel

Chlorine speciation and concentration in cultivated soil in the northeastern China studied by X-ray absorption near edge structure

Ist Teil von

• Huanjing kexue, 2014-10, Vol.35 (10), p.3836

Ort / Verlag

China

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• A procedure has been proposed to determine chlorine speciation and concentration in soil with X-ray absorption near edge structure (XANES), and this method was applied to study the cultivated soil (bog, dark brown and black cultivated soil) in the Northeastern China. Qualitative analysis was carried out by least-squares fitting of sample spectra with standard spectra of three model compounds (NaCl, 3-chloropropionic acid, chlorophenol red). Linear correlation between the absolute fluorescence intensity of a series of NaCl standards and the Cl concentration was used as quantification standard for measuring the total Cl concentration in samples. The detection limits,relative standard deviation (RSD), recoveries were 2 mg · kg(-1), 0%-5% and 77%-133%, respectively. The average concentration of total Cl was 19 mg · kg(-1). The average relative content was as high as 61% of organochlorine with the concentration of 1-2 times as high as the concentration of inorganic chloride. The distribution trend of the total Cl,