Pilot study on polychlorinated dibenzo-p-dioxins and dibenzofurans level of agricultural soil in Shanghai, China
Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in surface soil of agricultural area in Shanghai were analyzed to determine their levels and to identify possible differences between different polluting sources. The dioxin level was measured by EIA method based on US EPA 4025 in which the concentration is described as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) equivalents (Bio-TEQ pg/g). The concentration of dioxin from sixty soil samples analyzed in Shanghai area showed a normal distribution ranging from 2.8 to 23.4 Bio-TEQ pg/g with an average of 11.0 Bio-TEQ pg/g and a median of 11.1 Bio-TEQ pg/g. The result also showed that the PCDD/Fs concentration is at a similar level in different patterns of crop but is at distinct level in different regions. Dioxin is at a low level in the southwest of Shanghai and at a considerably higher level in the northwest region. Compared to the mainland area of Shanghai, the dioxin concentration in Chongming Island is in a homogeneous level of 10-15 Bio-TEQ pg/g.
Dioxin Immunoassay EIA Agricultural area
Zhiyi Rong Kang Li Haowen Yin
Bioassay and Safety Laboratory,Shanghai Academy of Public Measurement,Shanghai,P. R. China
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）