Neutron activation analysis of extractable organohalogens in milk from China |
| |
Authors: | Weike Zhong Diandou Xu Zhifang Chai Xueying Mao |
| |
Institution: | (1) Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, Beijing, 100039, P. R. China |
| |
Abstract: | Instrumental neutron activation analysis (INAA) has been used for the determination of extractable organohalogens (EOX) in
milk. The detection limits are 50 ng, 8 ng and 3.5 ng for Cl, Br and I, respectively. The EOX concentrations in milk samples
from various regions of China were determined. Meanwhile, organochlorine pesticides residues were detected by gas chromatography.
The concentrations of the EOX in the milk samples are decreasing in the order of EOCl >> EOBr > EOI, and EOCl accounts for
95% of the total EOX. The average concentration of EOCl in milk is 4.44 ·g/g expressed as fat weight basis, with the highest
value of 17.6 ·g/g from South China. The mean concentrations of total HCH and DDT are 0.038 ·g/g and 0.046 ·g/g, respectively.
Organochlorine pesticides account only for 1.6% of the EOCl, indicating the very high proportion of the unknown EOCl in the
milk sample.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|