Cai S, Yue L, Shang Q, Nordberg G
Institute of Environmental Health and Engineering, Chinese Academy of Preventive Medicine (CAPM), Beijing.
Bull World Health Organ. 1995;73(3):359-67.
River water used to irrigate arable land in Dayu County, Jiangxi Province, China, is polluted with cadmium from tailings and the wastewater of tungsten ore dressing plants. From information about the date on construction of ore dressing plants and an analysis of the annual growth rings of trees, we deduced that local residents have been exposed to cadmium for at least 25 years. Cadmium exposure was estimated based on a meal survey, which indicated that 99.5% of the oral cadmium intake came from rice and vegetables grown locally. The average oral intake of cadmium was calculated to be 367-382 micrograms/ day. Smokers had additional exposure from locally grown cadmium-containing tobacco. Cadmium concentrations in samples of urine (11 micrograms/g creatinine), blood (12 micrograms/l) and in the hair (0.11 microgram/g) of persons in the exposed area were high. The cadmium exposure lies in a range that can be considered to cause adverse renal effects in the long term.
中国江西省大余县用于灌溉耕地的河水受到尾矿和钨选矿厂废水镉的污染。根据选矿厂建设日期的信息以及对树木年轮的分析，我们推断当地居民接触镉至少已有25年。镉暴露是根据饮食调查估算的，该调查表明，经口摄入的镉99.5%来自当地种植的大米和蔬菜。经计算，镉的平均经口摄入量为367 - 382微克/天。吸烟者还因当地种植的含镉烟草而有额外暴露。暴露地区人群尿液样本（11微克/克肌酐）、血液样本（12微克/升）和头发样本（0.11微克/克）中的镉浓度较高。镉暴露处于长期可被认为会导致肾脏不良反应的范围内。
