發(fā)布時(shí)間：2018-06-05 23:38

  本文選題：烏達(dá) + 煤火��； 參考：《中國環(huán)境科學(xué)》2017年06期

【摘要】：針對(duì)烏達(dá)區(qū)約200km~2的區(qū)域按照1km網(wǎng)格法在185個(gè)點(diǎn)位采集了約1.5mm厚度的地表塵土樣.熱解-Lumex RA-915汞分析儀對(duì)其測(cè)試結(jié)果表明:煤礦區(qū)塵土汞含量范圍117~765ng/g,平均值為285ng/g;工業(yè)園塵土汞含量范圍160~6453ng/g,平均值為804ng/g;城區(qū)塵土汞含量范圍41~382ng/g,平均值為160ng/g;農(nóng)場(chǎng)塵土汞含量范圍16~198ng/g,平均值為66ng/g;荒地塵土范圍3~284ng/g,平均值為50ng/g.烏達(dá)區(qū)塵土汞分布具有顯著的非均一性.與烏達(dá)區(qū)背景值(18ng/g)和中國潮土背景值(50ng/g)相比較,烏達(dá)工業(yè)園和煤礦區(qū)塵土汞明顯富集.與國內(nèi)金屬礦區(qū)、城區(qū)塵土Hg含量相比,烏達(dá)煤礦區(qū)、城區(qū)塵土Hg含量較低;煤礦區(qū)塵土汞與煤火區(qū)、矸石山相對(duì)位置和本身地勢(shì)有關(guān);城區(qū)位于煤礦區(qū)下風(fēng)向,受煤礦區(qū)煤火影響,植被稀少、空氣干燥和夏季日照較長成為制約汞沉降的主控因素;工業(yè)園區(qū)的極大值點(diǎn)可能與區(qū)域地理位置和PVC生產(chǎn)相關(guān).通過計(jì)算Igeo值,發(fā)現(xiàn)烏達(dá)區(qū)工業(yè)園污染嚴(yán)重,偏重污染區(qū)域占全區(qū)36.59%,7.32%達(dá)到極重污染程度;煤礦區(qū)多為偏中污染和中污染,在全區(qū)所占比例為84.09%,偏重污染區(qū)域僅為2.27%;城區(qū)、農(nóng)場(chǎng)和荒地污染較少.
[Abstract]:According to the 1km grid method, dust samples of about 1.5mm thickness were collected at 185 points in the area of 200km~2 in Uda area. The test results of pyrolytic -Lumex RA-915 mercury analyzer show that: coal mine dust mercury content range 117765 ng / g, the average value is 285 ng / g; industrial park dust mercury content range 160 ~ 6453 ng / g, average is 804 ng / g; urban dust mercury content range 41382 ng / g, average is 160 ng / g; Farm dust mercury contains 160 ng / g; The amount ranges from 16 to 198 ng / g, with an average of 66 ng / g, and the dust range of wasteland is 3284 ng / g, with an average value of 50 ng / g. The distribution of dusty mercury in Uda area has remarkable heterogeneity. Compared with the background value of 18 ng / g in the Wuda area and 50 ng / g of the background value of the tidal soil in China, the dust mercury in the Wuda Industrial Park and the coal mining area is obviously enriched. Compared with domestic metal mining area and urban dust Hg content, the dust Hg content in Wuda coal mine area is lower, the relative position of coal mine dust mercury and coal fire area is related to the relative position of gangue mountain, and the urban area is located in the wind direction under coal mine area. Under the influence of coal and fire in coal mining area, vegetation is scarce, air drying and summer sunshine are the main controlling factors, and the maximum point of industrial park may be related to regional geographical location and PVC production. Through the calculation of Igeo value, it is found that the industrial park in Wuda district is polluted seriously, the heavily polluted area accounts for 36.597.32% of the total area, and the coal mine area is mostly moderately polluted and moderately polluted, the proportion in the whole area is 84.09, and the partial pollution area is only 2.27%. Farms and wasteland are less polluted.
【作者單位】： 中國礦業(yè)大學(xué)(北京)煤炭資源與安全開采國家重點(diǎn)實(shí)驗(yàn)室;中國礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;
【基金】：國家自然科學(xué)基金(41371449)
【分類號(hào)】：X513;X752
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本文編號(hào)：1983918