[A following up survey on cadmium level in rice in contaminated area, Jiangxi Province].
OBJECTIVE
To observe rice cadmium level in a contaminated area where has being continuously polluted for 19 years since last investigation.


METHODS
Samples of late rice (polished) grown in 2006 were collected from farmer household in contaminated and control area and its cadmium concentration were detected with IPC-MS.


RESULTS
Samples of polished rice from the polluted and control areas were detected. The average cadmium concentration from last investigation area 19 years before was 0.59 mg/kg (0.05 mg/kg for rice from control area), it upraises about 30% corresponding to average of rice from the same areas detected before 19 years. The average cadmium level of rice from whole contaminated areas (including last investigation and expanding areas) was 0.26 mg/kg and it is greater than that in control areas (0.06 mg/kg) and the limited value of national hygiene standard (< 0.20 mg/kg). There was about 64%, 23.17% and 11% of samples have higher level than 0.20 mg/kg (the limited value of national hygiene standard), 0.4 mg/kg (the limited value of Codex General Standard) and 1.0 mg/kg (cadmium-rice) respectively. There was a higher percentage (36.8%) of Cadmium-rice (greater than 1.0 mg/kg) in some heavy contamination villages.


CONCLUSIONS
Environmental cadmium pollution has being existing for 19 years since last investigation. Average cadmium concentration of rice from whole country polluted areas was higher than that of national hygiene standard. Percentage of "cadmium-rice" might be higher in some villages.
Shang
Qi
Q
Institute for Environmental Health and Related Product Safety, China CDC, Beijing 100050, China. Sqyoux@yahoo.com.cn
Zhai
Miaomiao
M
Yao
Liangsan
L
Zhang
Wenli
W
D002104:Cadmium / Q000032:analysis*; D002681:China; D004781:Environmental Exposure / Q000032:analysis*; D005260:Female; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D008297:Male; D012275:Oryza / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis
D012989:Soil Pollutants; D002104:Cadmium