光谱学与光谱分析 |
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Study of Microelements in Plant’s Ash and Environmental Soil by Microwave Digestion ICP-AES |
ZHANG Yu-ling1,2,WANG Song-jun2*,WANG Pu-jun3, CAI Yu1,4 |
1. College of Environment and Resources,Jilin University,Changchun 130026, China 2. College of Chemistry and Bioengineering,Suzhou University of Science and Technology,Suzhou 215011, China 3. College of Earth Science,Jilin University,Changchun 130061, China 4. Song Liao River Basin Water Resources Protection Bureau, Changchun 130021, China |
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Abstract A model MDS-2002A microwave digestion sample preparation system with auto control pressure in obturation was developed for the determination of microelements in clearing-up plant’s ash and environment soil sample by ICP-AES. The authors discussed sample preparation result influenced by mixed acid system, scale of mixed acid dispensation, proportion between solid and liquid and time of microwave clearing. Excellent project was A2B1C2,work procedure 2 in microwave process. When the dispensation scale was 6∶2∶1∶1 and mixed acid system was HNO3-HCl-HF-HClO4, the result was the best in 10 min of microwave clearing at highest power. The reagent was dried at constant temperature electric heating board, with its salinity being dissolved by aqua fortis. The method was validated through the soil (GBW07401) and plant (GBW07603) for national standard matter. The relative error of its result is between 0.00% and 7.14%, and the relative standard deviation is between 0.87% and 5.25%. The method is quick, handy, saving reagent and completely digesting in dealing with plant’s ash and soil sample, and the accuracy and precision of results are satisfying.
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Received: 2008-06-16
Accepted: 2008-09-18
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Corresponding Authors:
WANG Song-jun
E-mail: wangsongjun@sina.com
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[1] 多布罗沃利斯基 B B. Microelement Geography(微量元素地理学). Beijing: Science Press(北京: 科学出版社), 1987. [2] WANG Song-jun,CHANG Ping,GAN Shu-cai,et al(王松君,常 平,甘树才,等). Journal of Jilin University(Science Edition)(吉林大学学报·理学版), 2004,42(3): 455. [3] GONG Xiao-feng, CHEN Chun-li, ZHAO Jin, et al(弓晓峰,陈春丽,赵 晋, 等 ). Spectroscopy and Spectral Analysis(光谱学与光谱分析) ,2007,27(8): 1634.
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