本文選題：土壤 + 微量汞含量�。� 參考：《環(huán)境化學(xué)》2017年02期

【摘要】：采集石河子市區(qū)土壤樣品71個,測定其微量汞含量,系統(tǒng)分析了汞含量的空間分布,并對市區(qū)土壤汞污染水平和風(fēng)險進(jìn)行評價.結(jié)果表明,石河子市區(qū)微量汞含量變化范圍為0.001—0.902 mg·kg-1,所采的土壤樣汞含量均低于國家二級標(biāo)準(zhǔn),但其平均值要比新疆土壤背景汞含量(0.017 mg·kg-1)高;土壤汞含量的總體特征分布以東北部的氯堿生產(chǎn)和燃煤電廠為中心呈現(xiàn)逐級遞減趨勢,市區(qū)東北方向汞含量最高,而以東南地區(qū)的汞含量最低.基于國家土壤二級標(biāo)準(zhǔn)的單因子污染指數(shù)法(平均值0.175)、地積累指數(shù)法(平均值1.539)和潛在風(fēng)險指數(shù)法相結(jié)合能更直觀地反映石河子市區(qū)的污染水平和潛在風(fēng)險程度;土壤風(fēng)險健康評價發(fā)現(xiàn)土壤汞經(jīng)攝食途徑進(jìn)入人體的健康風(fēng)險均低于正常水平.
[Abstract]:A total of 71 soil samples from Shihezi city were collected and their trace mercury content was determined. The spatial distribution of mercury content was systematically analyzed and the level and risk of mercury pollution in urban soil were evaluated. The results showed that the range of trace mercury content in Shihezi urban area was 0.001-0.902 mg / kg ~ (-1). The mercury content of soil samples collected was lower than that of the second grade national standard, but the average value was higher than that of soil background mercury content of 0.017 mg 路kg ~ (-1) in Xinjiang. The overall characteristics of soil mercury content in the northeast of the distribution of chlor-alkali production and coal-fired power plants as the center of a gradual decline trend, the urban area in the northeast direction of mercury content is the highest, but in the southeast region of mercury content is the lowest. The combination of single factor pollution index method (mean value 0.175), land accumulation index method (average 1.539) and potential risk index method based on national soil secondary standard can more directly reflect the pollution level and potential risk degree of Shihezi city. The health assessment of soil risk showed that the health risk of mercury entering human body was lower than normal level.
【作者單位】： 石河子大學(xué)化學(xué)化工學(xué)院新疆兵團(tuán)化工綠色過程重點實驗室省部共建國家重點實驗室培育基地材料化工新疆維吾爾自治區(qū)重點實驗室;
【基金】：國家自然科學(xué)基金(21467026,21267020) 石河子大學(xué)校級課題(400381010)資助~~
【分類號】：X53;X825

【參考文獻(xiàn)】

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