土壤中阳离子交换量分析方法的优化研究
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摘要
为了提高土壤中阳离子交换量的检测效率,针对现用标准方法的不足,介绍了一种利用阳离子交换量前处理系统并结合全自动凯氏定氮仪测定土壤中阳离子交换量的快速方法,对离心和蒸馏滴定分析步骤进行了优化改进。在原理不变的前提下,对实验仪器的参数进行了最佳选择。实验得出:乙酸铵搅拌15 min,乙醇淋洗4次,蒸馏5 min。该条件下,通过对国家土壤有证标准物质进行测试,得出分析方法的精密度和准确度均符合要求。本研究的分析方法操作简便、效率高、准确度和重复性良好,适用于大批量土壤中阳离子交换量的测定。
To improve the detection efficiency of the cation exchange capacity in soil, in view of the deficiency of the present standard, this study puts forward a rapid detection method by combining the pretreatment system of cation exchange capacity and Kjeltec Automatic Azotometer. The analytical steps of centrifugal and distillation titration were optimized and improved. On the premise of constant principle, the parameters of the instrument were optimized. The results were as follows: ammonium acetate was stirred for 15 min; ethanol was used to wash the soil for 4 times, and distilled for 5 min. Under the condition, the precision and accuracy of this analysis method were in accordance with the requirements by testing the national soil certified reference materials. Thus the analysis method is simple, efficient, accurate and reproducible. It is suitable for the determination of the cation exchange capacity in large quantities of soil samples.
To improve the detection efficiency of the cation exchange capacity in soil, in view of the deficiency of the present standard, this study puts forward a rapid detection method by combining the pretreatment system of cation exchange capacity and Kjeltec Automatic Azotometer. The analytical steps of centrifugal and distillation titration were optimized and improved. On the premise of constant principle, the parameters of the instrument were optimized. The results were as follows: ammonium acetate was stirred for 15 min; ethanol was used to wash the soil for 4 times, and distilled for 5 min. Under the condition, the precision and accuracy of this analysis method were in accordance with the requirements by testing the national soil certified reference materials. Thus the analysis method is simple, efficient, accurate and reproducible. It is suitable for the determination of the cation exchange capacity in large quantities of soil samples.
引文
[1]拉毛吉,王玉功,张榕,等.纳氏试剂分光光度法测定土壤阳离子交换量[J].中国无机分析化学,2018,8(04):16-20.
[2]孙娟,郑玉涛,王保勤,等.容量法测定土壤阳离子交换量的方法探讨[J].环境监控与预警,2018,10(04):28-31.
[3]鲍士旦.土壤农化分析(第三版)[M].北京:中国农业出版社,2005.
[4]王晓春.太原市代表性区域内土壤阳离子交换量的测定及分析[J].山西科技,2016,31(03):58-60.
[5]拉毛吉,王玉功,张榕.乙酸铵离心交换法和乙酸钙离心交换法测定土壤阳离子交换量[J].中国无机分析化学,2017,7(3):38-41.
[6]王亚宁,李琳.土壤阳离子交换量在城市土壤质量评价中的应用[J].农业开发与装备,2016,11(5):35-37.
[7]范庆锋,虞娜,张玉玲,等.设施蔬菜栽培对土壤阳离子交换性能的影响[J].土壤学报,2014(22):1132-1137.
[8]谭美娟,汪晨霞,卫晋波.乙酸铵交换法测定酸性土壤阳离子交换量的方法改良探讨[J].化工管理,2016(20):148-150.
[9]崔炳利.石灰性土壤阳离子交换量的测定方法改进[J].当代化工研究,2018(04):151-152.
[10]张琪,方海兰,黄懿珍,等.土壤阳离子交换量在上海城市土壤质量评价中的应用[J].土壤,2005,37(6):679-682.
[11]许亚琪.土壤阳离子交换量的分析结果研究[J].干旱环境监测,2018,32(1):19-23.
[12]中华人民共和国农业部.NY/T1121.5-2006,石灰性土壤阳离子交换量的测定[S].北京:中国标准出版社,2006:1.
[13]中华人民共和国农业部.NY/T295-1995,中性土壤阳离子交换量和交换性盐基的测定[S].北京:中国标准出版社,1995:281.
[14]中华人民共和国林业部.LY/T1243-1999,森林土壤阳离子交换量的测定[S].北京:中国标准出版社,1999:125.
[15]史斌,朱晓丹,陆国兴等.全自动淋洗仪在土壤阳离子交换量测定中的应用[J].环境与发展,2017,2(10):139-142.
[16]周圆,卞世闻,张宇.凯氏定氮仪测定土壤阳离子交换量的方法改进[J].环境科学导刊,2015,34(06):106-109.
[17]张力平,张台凡,魏斌,等.凯氏定氮仪测定土壤阳离子交换量方法优化[J].资源节约与环保,2018,(07):22-27.
[18]沈纯怡,邢伟银.快速检测土壤阳离子交换量的研究[J].中国土壤与肥料,2016,5(1):144-147.
[19]李艳荣,徐蕾.全自动淋洗-智能蒸馏联合技术检测土壤中阳离子交换量[J].环境监控与预警,2018,10(2):30-32.
[20]房彬,季民,张建,等.复合淋洗剂对熔炼厂遗留场地土壤Pb、Cd的浸提效果[J].化工环保,2018,38(4):456-460.
[2]孙娟,郑玉涛,王保勤,等.容量法测定土壤阳离子交换量的方法探讨[J].环境监控与预警,2018,10(04):28-31.
[3]鲍士旦.土壤农化分析(第三版)[M].北京:中国农业出版社,2005.
[4]王晓春.太原市代表性区域内土壤阳离子交换量的测定及分析[J].山西科技,2016,31(03):58-60.
[5]拉毛吉,王玉功,张榕.乙酸铵离心交换法和乙酸钙离心交换法测定土壤阳离子交换量[J].中国无机分析化学,2017,7(3):38-41.
[6]王亚宁,李琳.土壤阳离子交换量在城市土壤质量评价中的应用[J].农业开发与装备,2016,11(5):35-37.
[7]范庆锋,虞娜,张玉玲,等.设施蔬菜栽培对土壤阳离子交换性能的影响[J].土壤学报,2014(22):1132-1137.
[8]谭美娟,汪晨霞,卫晋波.乙酸铵交换法测定酸性土壤阳离子交换量的方法改良探讨[J].化工管理,2016(20):148-150.
[9]崔炳利.石灰性土壤阳离子交换量的测定方法改进[J].当代化工研究,2018(04):151-152.
[10]张琪,方海兰,黄懿珍,等.土壤阳离子交换量在上海城市土壤质量评价中的应用[J].土壤,2005,37(6):679-682.
[11]许亚琪.土壤阳离子交换量的分析结果研究[J].干旱环境监测,2018,32(1):19-23.
[12]中华人民共和国农业部.NY/T1121.5-2006,石灰性土壤阳离子交换量的测定[S].北京:中国标准出版社,2006:1.
[13]中华人民共和国农业部.NY/T295-1995,中性土壤阳离子交换量和交换性盐基的测定[S].北京:中国标准出版社,1995:281.
[14]中华人民共和国林业部.LY/T1243-1999,森林土壤阳离子交换量的测定[S].北京:中国标准出版社,1999:125.
[15]史斌,朱晓丹,陆国兴等.全自动淋洗仪在土壤阳离子交换量测定中的应用[J].环境与发展,2017,2(10):139-142.
[16]周圆,卞世闻,张宇.凯氏定氮仪测定土壤阳离子交换量的方法改进[J].环境科学导刊,2015,34(06):106-109.
[17]张力平,张台凡,魏斌,等.凯氏定氮仪测定土壤阳离子交换量方法优化[J].资源节约与环保,2018,(07):22-27.
[18]沈纯怡,邢伟银.快速检测土壤阳离子交换量的研究[J].中国土壤与肥料,2016,5(1):144-147.
[19]李艳荣,徐蕾.全自动淋洗-智能蒸馏联合技术检测土壤中阳离子交换量[J].环境监控与预警,2018,10(2):30-32.
[20]房彬,季民,张建,等.复合淋洗剂对熔炼厂遗留场地土壤Pb、Cd的浸提效果[J].化工环保,2018,38(4):456-460.