乌鲁木齐市米东区农田土壤镉污染调查与分析

Investigation and analysis of farmland soil Cd pollution in Midong Distrcit,Urumqi

2010年5月在乌鲁木齐市米东区对农田土壤进行了采样,采样点共67个,采用石墨炉原子吸收光谱仪对土壤中重金属Cd进行了分析。结果表明:米东区农田土壤Cd含量在0.25～1.03mg·kg-1之间,平均值为0.57mg·kg-1。根据单因子评价法,Pi≤0.7的采样点有15个,0.7﹤Pi≤1.0的采样点有21个,1.0<Pi≤2.0的采样点有31个,中污染及重污染点无。

67 farmland soil samples were collected in Midong district of Urumqi in May,2010,and their Cd contents were analyzed by graphite atomic absorption spectrometry.The result showed the Cd contents of these samples variy from 0.25 to 1.03mg·kg-1,the mean is 0.57mg·kg-1.Based on the Single-factor evaluation method,there are 15 sample sites with Pi≤0.7,21 sample sites within 0.7﹤Pi≤1.0,31 sample sites within 1.0Pi≤2.0.There aren＇t medium level or serious level of polluted sites.