盐酸溶样—火焰原子吸收光谱法测定氰化尾渣中的金
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摘要
研究了在搅拌条件下用盐酸溶解氰化尾渣,以火焰原子吸收光谱法测定金。结果表明:用盐酸溶解样品,不发生喷溅现象,且不受样品质量限制;对氰化尾渣,在100℃、盐酸过量系数2.0条件下溶解1.0h,然后用火焰原子吸收光谱法测定,结果与标准物质(GBW07808b,GBW07809b)基本吻合;方法精密度、准确度较高;与王水溶样方法相比,测定结果之差的绝对值与其扩展不确定度的比值为0.023(<1),表明方法可行。
Determination of gold in cyanide tailing by hydrochloric acid dissolving sample and flame atomic absorption spectrometry was studied.The results show that the sample is dissolved using hydrochloric acid,the system is no splash,and is not controlled by sample mass.For cyanide tailing,under the conditions of 100 ℃,hydrochloric acid excessive coefficient of 2.0 and dissolving time of 2 hours,the determination results by the method is in accordance with reference material(GBW07808 b,GBW07809 b).The method has high accuracy.Compared with the method of dissolving sample using aqua regia,the ratio of the difference absolute value of two methods to uncertainty value is 0.023(<1)which proves that the method is feasible.
Determination of gold in cyanide tailing by hydrochloric acid dissolving sample and flame atomic absorption spectrometry was studied.The results show that the sample is dissolved using hydrochloric acid,the system is no splash,and is not controlled by sample mass.For cyanide tailing,under the conditions of 100 ℃,hydrochloric acid excessive coefficient of 2.0 and dissolving time of 2 hours,the determination results by the method is in accordance with reference material(GBW07808 b,GBW07809 b).The method has high accuracy.Compared with the method of dissolving sample using aqua regia,the ratio of the difference absolute value of two methods to uncertainty value is 0.023(<1)which proves that the method is feasible.
引文
[1]葛艳梅.王水溶样—火焰原子吸收光谱法直接测定高品位金矿石的金量[J].岩矿测试,2014,33(4):491-496.
[2]付文慧,艾兆春,葛艳梅,等.火焰原子吸收光谱法测定高品位金矿石中的金[J].岩矿测试,2013,32(3):427-430.
[3]罗永红,韦真周,张相钰,等.湿法氧化除硫碳—活性炭富集—原子吸收分光光度法测定矿石中的金[J].湿法冶金,2016,35(2):167-170.
[4]王虹,马德起,苏明跃.改性活性炭富集—火焰原子吸收光谱法测定铜精矿中金[J].冶金分析,2006,26(6):54-55.
[5]张碧玲,孙爱琴,姚文生,等.石墨炉原子吸收测定岩石样品中痕量金的研究[J].黄金,2005,26(5):42-44.
[6]任奇钰,李绍聪,周一英.简易分离贱金属快速原子吸收法测定金[J].分析化学,1982,10(4):227-229.
[7]邓淑萍.含碳铅精矿中干扰元素的消除与金的溶解试验的研究[J].黄金,2001,22(6):45-47.
[8]薛光.氯化钠-溴水封闭溶样碘量法测定矿石中的金[J].岩矿测试,1994,13(2):137-139.
[9]王明西.非酸溶矿、泡塑吸附技术在金分析中的应用[J].陕西地质,1994,12(1);83-89.
[10]薛光.金的三正辛胺棉富集分离氢醌滴定法[J].黄金,1997,18(5):48-50.
[11]杨理勤.含碳酸盐的银金矿样中金的溶解方法的实验研究[J].黄金,1996,17(10):49-50.
[12]屈伟,王正模.火焰原子吸收光谱法测定含金矿石样品中金[J].理化检验(化学分册),2010,46(12):1474-1480.
[13]彭定显,林伟斌,李啸.关于测定地质样品中金的冷溶技术的探讨[J].黄金,1997,18(8):53-54.
[14]杨熙.铜精矿中微量金的快速测定[J].分析实验室,1984,3(6):59-60.
[15]罗方若.微波溶样在地质试样分析中的应用[J].地质实验室,1995,11(4):237-240.
[16]彭铁辉.氯化铁溶液浸出金的热力学分析[J].黄金,1990,11(8):30-32.
[17]师兆忠,占桂荣,韩艳霞.一步法浸取氰化尾渣中金、铁、铅的实验研究[J].环境科学与技术,2016,39(9):56-60.
[2]付文慧,艾兆春,葛艳梅,等.火焰原子吸收光谱法测定高品位金矿石中的金[J].岩矿测试,2013,32(3):427-430.
[3]罗永红,韦真周,张相钰,等.湿法氧化除硫碳—活性炭富集—原子吸收分光光度法测定矿石中的金[J].湿法冶金,2016,35(2):167-170.
[4]王虹,马德起,苏明跃.改性活性炭富集—火焰原子吸收光谱法测定铜精矿中金[J].冶金分析,2006,26(6):54-55.
[5]张碧玲,孙爱琴,姚文生,等.石墨炉原子吸收测定岩石样品中痕量金的研究[J].黄金,2005,26(5):42-44.
[6]任奇钰,李绍聪,周一英.简易分离贱金属快速原子吸收法测定金[J].分析化学,1982,10(4):227-229.
[7]邓淑萍.含碳铅精矿中干扰元素的消除与金的溶解试验的研究[J].黄金,2001,22(6):45-47.
[8]薛光.氯化钠-溴水封闭溶样碘量法测定矿石中的金[J].岩矿测试,1994,13(2):137-139.
[9]王明西.非酸溶矿、泡塑吸附技术在金分析中的应用[J].陕西地质,1994,12(1);83-89.
[10]薛光.金的三正辛胺棉富集分离氢醌滴定法[J].黄金,1997,18(5):48-50.
[11]杨理勤.含碳酸盐的银金矿样中金的溶解方法的实验研究[J].黄金,1996,17(10):49-50.
[12]屈伟,王正模.火焰原子吸收光谱法测定含金矿石样品中金[J].理化检验(化学分册),2010,46(12):1474-1480.
[13]彭定显,林伟斌,李啸.关于测定地质样品中金的冷溶技术的探讨[J].黄金,1997,18(8):53-54.
[14]杨熙.铜精矿中微量金的快速测定[J].分析实验室,1984,3(6):59-60.
[15]罗方若.微波溶样在地质试样分析中的应用[J].地质实验室,1995,11(4):237-240.
[16]彭铁辉.氯化铁溶液浸出金的热力学分析[J].黄金,1990,11(8):30-32.
[17]师兆忠,占桂荣,韩艳霞.一步法浸取氰化尾渣中金、铁、铅的实验研究[J].环境科学与技术,2016,39(9):56-60.