ION CHROMATOGRAM METHOD FOR ANALYZING ANIONS AND CATIONS IN PORE WATER FROM MARINE SEDIMENTS
-
摘要: 分别采用Metrosep A Supp4-250型阴离子柱和Metrosep C 2-150型阳离子柱,以1.8 mmol/L Na2CO3+1.7 mmol/L NaHCO3和4 mmol/L酒石酸+0.75 mmol/L吡啶二羧酸为阴阳离子淋洗液,用离子色谱仪来测定海洋沉积物孔隙水中阴离子Cl-、Br-和SO42-浓度和阳离子Na+、NH4+、K+、Ca2+、Mg2+的浓度。特别是针对高Cl-和高Na+背景下Br-和NH4+的测定做了专门分析,得到了较理想的结果,建立了一套离子色谱法测定海洋沉积物孔隙水中常见的阴阳离子含量的实验方法。Abstract: We use ion chromatogram technique to determine the anion and cation ion concentrations in pore waters. Metrosep A Supp4-250 type column and 1.8 mmol/L Na2CO3+1.7 mmol/L NaHCO3mixed solution in anion system are used to determine concentrations of Cl-,Br-and SO42- in pore water, and Metrosep C 2-150 type column and 4 mmol/L tartaric acid+0.75 mmol/L C7H5NO4 mixed solution in cation system are used to determine concentrations of Na+,NH4+,K+,Ca2+and Mg2+.The results indicate that correlation coefficient between measured and standard values for each ion in standard solutions preponderates over 0.999. The detection limit is less than 0.5 mg/L, and the relative standard deviation is better than 3%. In particular, we carried out special experiment to measure Br-concentration under high Cl- concentration background as well as NH4+concentration under high Na+ concentration background. Right now, a tentative ion chromatograph method for analyzing concentrations of cations and anions in pore water from marine sediments has been established in our lab. This method has been proved to be rapid, simple, sensitive, and accurate.
-
Key words:
- ion chromatograph /
- pore water /
- cation /
- anion
-
-
[1] 蒋少涌,凌洪飞,杨競红,等.同位素新技术方法及其在天然气水合物研究中的应用[J].海洋地质动态,2001,7:24-29.[JIANG Shao-yong,LING Hong-fei,YANG Jing-hong,et al.Isotope new technology and its application to researching gas hydrates[J].Marine Geology Development,2001
,7:24-29.]
[2] 蒋少涌,凌洪飞,杨競红,等.海洋浅表层沉积物和孔隙水的天然气水合物地球化学异常识别标志[J].海洋地质与第四纪地质,2003,23:87-94.[JIANG Shao-yong,LING Hong-fei,YANG Jing-hong,et al.Gas hydrate geochemical anomaly from shallow sediments and pore waters[J].Marine Geology and Quaternary Geology,2003
,23:87-94.]
[3] 凌洪飞,蒋少涌,倪培,等.沉积物孔隙水地球化学异常:天然气水合物存在的指标[J].海洋地质动态,2001,7:34-37.[LING Hong-fei,JIANG Shao-yong,NI Pei,et al.Geochemical anomaly of pore waters from marine sediments:An indicator for gas hydrate[J].Marine Geology Development,2001
,7:34-37.]
[4] Borowski W S,Paul C K,Ussler Ⅲ W.Global and local variations of interstitial sulfate gradients in deep-water,continental margin sediments:Sensitivity to underlying methane and gas hydrates[J].Marine Geology,1999,159:131-154.
[5] Ussler Ⅲ W,Paull C K.Ion exclusion associated with gas hydrate deposits[C]//Paull C K,Dillon W P.Natural Gas Hydrates:Occurrences,Distribution,and Detection.Geophysical Monograph.Washington:American Geophysical Union,2001.124:41-52.
[6] 纪峰,邢艳,马强,等.DX-120型离子色谱仪在水质检测中的应用[J].化学工程师,2001,6(3):40-41.
[JI Feng,XING Yan,MA Qiang,et al.Application of ion chromatograph in water quality testing[J].Chemical Engineer,2001,6(3):40-41.]
[7] 陆洋,林奇.离子色谱法测定水中微量卤化物及卤素含氧酸盐[J].净水技术,2002,21(2):41-43
,47.[LU Yang,LIN Qi.Determination of trace amount of halides and salts of haloid oxyacid in water by ion chromatographic method[J].Water Purification Technology,2002,21(2):41-43,47.]
[8] 钟志雄,杜达安,梁旭霞,等.离子色谱法同时测定样品中的Li+、Na+、NH4+、K+、Ca2+、Mg2+ 离子[J].中国卫生检验杂志,2000,10(6):645-650.
[ZHONG Zhi-xiong,DU Da-an,LIANG Xu-xia,et al.Simultaneously determination of Li+、Na+、NH4+、K+、Ca2+、Mg2+ in samples by ion chromatography[J].Chinese Journal of Health Laboratory Technology,2000,10(6):645-650.]
[9] 胡荣宗,郑金建,刘文远,等.等速电泳法同时检测K+、Na+、Ca2+、Mg2+和NH4+[J].分析仪器,1999,12:47-50.[HU Rong-zong,ZHENG Jin-jian,LIU Wen-yuan,et al.Simultaneous determination of K+、Na+、Ca2
+、Mg2+ and NH4+by isotachophoresis[J].Analytical Instrumentation,1999,12:47-50.]
[10] 袁雪芬,郑俊荣,唐忠宁,等.ICP-AES法同时测定天然饮用矿泉水中Li等19种元素[J].中国公共卫生,1999,15(8):727-728.
[YUAN Xue-fen,ZHENG Jun-rong,TANG Zhong-ning,et al.Simultaneous determination of 19 elements in mineral water by ICP-AES[J].China Public Health,1999,15(8):727-728.]
[11] 牟世芬,刘克纳.离子色谱方法及应用[M].化学工业出版社,2003:6-8.[MOU Shi-fen,LIU Ke-na.Method and application of ion chromatography[M].Chemistry Industry Publishing Company,2003:6
-8.]
[12] 吴涤尘,阎炎,韩恒斌.低压离子色谱法测定水和酸雨样品中的Li+,Na+,NH4+,K+,Ca2+和Mg2+离子[J].环境化学,1996,15(5):441.[WU Di-chen,YAN Yan,HAN Heng-bin.Determination of cations (Li+,Na+,NH4
+,K+、Ca2+and Mg2+) in water and acid rain by low pressure ion chromatography[J].Environmental Chemistry,1996,15(5):441.]
[13] 杨涛,蒋少涌,杨競红,等.孔隙水中NH4+和HPO42-浓度异常:一种潜在的天然气水合物地球化学勘查新指标[J]. 现代地质,2005, 19(1):55-60.
[YANG Tao,JIANG Shao-yong,YANG Jing-hong,et al.Anomaly of ammonia and phosphate concentration in pore waters:A potential geochemical indicator for prospecting marine gas hydrate[J]. Geoscience,2005, 19(1):55-60.]
[14] 蒋少涌,杨涛,薛紫晨,等.南海北部海区海底沉积物中孔隙水的C1-和SO42-浓度异常特征及其对天然气水合物的指示意义[J]. 现代地质,2005, 19(1):45-54.
[JIANG Shao-yong,YANG Tao,XUE Zi-chen,et al. Chlorine and sulfate concentrations in pore waters from marine sediments in the north margin of the South China Sea and their implications for gas hydrate exploration[J]. Geoscience,2005, 19(1):45-54.]
-
计量
- 文章访问数: 1000
- PDF下载数: 2
- 施引文献: 0
下载: