环境科学与技术
環境科學與技術
배경과학여기술
ENVIRONMENTAL SCIENCE & TECHNOLOGY
2010年
5期
124-125
,共2页
煤矸石%微波消化%Ni%Fe%Mn%Cr%ICP-AES法
煤矸石%微波消化%Ni%Fe%Mn%Cr%ICP-AES法
매안석%미파소화%Ni%Fe%Mn%Cr%ICP-AES법
coal gangue%microwave digestion%Ni%Fe%Mn%Cr%ICP-AES
取1.000g矸石样品于聚四氟乙烯坩埚中,加入5mL H2O2放置过夜,加6mL浓HCl,4mL浓HNO3,在微波炉中消解至近干,再加2mL HF,继续消解至粘稠状,用温热稀HCl溶解残渣,转人50mL容量瓶中,加1%HNO2定容,用ICP-AES法测定煤矸中Ni、Fe、Mn、Cr.在选定的测定条件下,检出限分别为0.013mg/L、0.0044mg/L、0.0014mg/L和0.0069mg/L;精密度的相对标准偏差分别为2.9%、3.4%、3.1%、2.1%;准确度实验铬的回收率在97.5%～106.0%之间.
取1.000g矸石樣品于聚四氟乙烯坩堝中,加入5mL H2O2放置過夜,加6mL濃HCl,4mL濃HNO3,在微波爐中消解至近榦,再加2mL HF,繼續消解至粘稠狀,用溫熱稀HCl溶解殘渣,轉人50mL容量瓶中,加1%HNO2定容,用ICP-AES法測定煤矸中Ni、Fe、Mn、Cr.在選定的測定條件下,檢齣限分彆為0.013mg/L、0.0044mg/L、0.0014mg/L和0.0069mg/L;精密度的相對標準偏差分彆為2.9%、3.4%、3.1%、2.1%;準確度實驗鉻的迴收率在97.5%～106.0%之間.
취1.000g안석양품우취사불을희감과중,가입5mL H2O2방치과야,가6mL농HCl,4mL농HNO3,재미파로중소해지근간,재가2mL HF,계속소해지점주상,용온열희HCl용해잔사,전인50mL용량병중,가1%HNO2정용,용ICP-AES법측정매안중Ni、Fe、Mn、Cr.재선정적측정조건하,검출한분별위0.013mg/L、0.0044mg/L、0.0014mg/L화0.0069mg/L;정밀도적상대표준편차분별위2.9%、3.4%、3.1%、2.1%;준학도실험락적회수솔재97.5%～106.0%지간.
Taking 1.000g coal gangue sample and put in Teflon pot, add in 5mL H2O2 and laid for the whole night. Then add in 6mL strong HCI and 4mL strong HNO3 for digestion in microwave stove. Then put in another 2mL HF and continue to digest until they become a kind of stick substance. Use distemper light HCl to dissolve leavings and transfer them into 50mL content bottle, add in 1% HNO3 for volume fixing. ICP-AES was used to determine Ni, Fe, Mn and Cr in coal gangue,under the selected conditions, the detection limit was 0.013mg/L, 0.0044mg/L, 0.0014mg/L and 0.0069mg/L, with relative standard errors of precision of 2.9%, 3.4%, 3.1% and 2.1% respectively. Recovery of Cu could be between 97.5% and 106.0%.
