本文選題：飲用水　切入點：砷形態(tài)　出處：《環(huán)境化學(xué)》2017年10期

【摘要】：水源水經(jīng)水管傳輸后,其砷形態(tài)的含量及其百分比變化特征研究較少.因此,本文選擇內(nèi)蒙古某飲水型砷中毒病區(qū)為研究區(qū),分析飲用的水源水日際和日內(nèi)總無機砷含量(iAs)、以及水源水傳輸?shù)接脩舳说哪┥宜蛢Υ嫠臒o機砷形態(tài)含量(iAs~Ⅲ、iAs~Ⅴ).結(jié)果發(fā)現(xiàn),水源水iAs~Ⅲ、iAs~Ⅴ和iAs的平均含量分別為32.19、64.58、96.77μg·L~(-1),末梢水iAs~Ⅲ、iAs~Ⅴ和iAs的平均含量分別為100.11、63.09、163.21μg·L~(-1),而儲存水iAs~Ⅲ、iAs~Ⅴ和iAs的平均含量分別為14.72、126.41、141.12μg·L_(-1).水源水的iAs~Ⅴ和iAs含量日內(nèi)具有明顯的變化,iAs含量在日際間無明顯的差異,而iAs~Ⅲ和iAs~Ⅴ含量在日際間存在較為明顯的變化.此外,水源水、末梢水和儲存水的iAs~Ⅲ占總無機砷的比例分別為33.26%、61.33%和10.43%,而iAs~Ⅴ占總無機砷的比例分別為66.74%、38.67%和89.57%.該結(jié)果表明,飲水砷形態(tài)的轉(zhuǎn)化可能受到水與空氣接觸時間、氣溫、氣壓和水溫等因素的影響,且水源水在水管傳輸過程中可能導(dǎo)致末梢水和儲存水的iAs含量增加.因此,飲水砷的暴露評估應(yīng)關(guān)注不同形態(tài)的砷暴露以及飲水類型的砷暴露.
[Abstract]:After the source water is transported through the water pipe, there are few studies on the content of arsenic and its percentage change. Therefore, a drinking water type arsenism area in Inner Mongolia is selected as the study area in this paper. The contents of total inorganic arsenic in drinking water during the day and in the day, as well as the terminal water transported to the user side and the inorganic arsenic species in the storage water are analyzed. The results show that, The average contents of iAs- 鈪，

本文編號：1665791