快速检测土壤阳离子交换量的方法优化
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摘要
采用瓶口分液器、旋涡混合仪、凯氏定氮仪和自动电位滴定仪,对土壤阳离子交换量常规检测方法乙酸铵交换法和氯化铵-乙酸铵交换法的样品称样量、乙酸铵和乙醇的用量、洗涤离心次数、定氮仪的蒸馏时间和蒸汽量等技术参数进行优化研究。结果表明,这2种方法具有工作效率高、适用范围广的特点,经土壤标准物质验证,2种方法的精密度和准确度均符合要求。在进行大批量土壤样品作业时,这2种方法更具优势。
By applying varispenser, vortex mixer, azotometer, automatic potentiometric titrator, compared with exchange method of ammonium acetate and ammonium chloride-ammonium acetate, this study improved the test process and optimized sampling quality, the amount of ammonium acetate and ethyl alcohol, centrifugation number of times, the distill time and quantity of steam. The results showed that the two methods had the characteristics of high efficiency and wide application. Certified by standard reference soil samples, the precision and accuracy of the method were in line with the requirements. The two methods was more advantageous in mass soil sample determinations.
By applying varispenser, vortex mixer, azotometer, automatic potentiometric titrator, compared with exchange method of ammonium acetate and ammonium chloride-ammonium acetate, this study improved the test process and optimized sampling quality, the amount of ammonium acetate and ethyl alcohol, centrifugation number of times, the distill time and quantity of steam. The results showed that the two methods had the characteristics of high efficiency and wide application. Certified by standard reference soil samples, the precision and accuracy of the method were in line with the requirements. The two methods was more advantageous in mass soil sample determinations.
引文
[1]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.
[2]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].环境科学导则,2015,34(6):106-109.
[3]肖艳霞,赵颖,王彦君,等.土壤阳离子交换量分析方法的优化研究[J].中国农学通报,2019,35(15):74-78.
[4]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
[5]鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000.
[6]朱祖祥.土壤学[M].北京:农业出版社,1983.
[7]谈近强,刘洪宜,卢瑛,等.中山市不同土地利用方式下土壤肥力特性的剖面分布特征[J].广东农业科学,2015,42(6):45-50.
[8]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.
[9]全国农业分析标准化技术委员会. NY/T 295—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,1996.
[10]中国林业科学研究院林业研究所森林土壤研究室. 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.
[11]李林,张晓光,武中波.中性土壤阳离子交换量测定应注意的事项[J].中国环境监测,2004,20(6):4.
[12]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(7):148-150.
[13]沈纯仪,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):144-147.
[14]陈玉娥,史靖,王惠芝.自动电位滴定在石灰性土壤阳离子交换量测定中的应用[J].河北林业科技,1998,6(2):27.
[2]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].环境科学导则,2015,34(6):106-109.
[3]肖艳霞,赵颖,王彦君,等.土壤阳离子交换量分析方法的优化研究[J].中国农学通报,2019,35(15):74-78.
[4]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
[5]鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000.
[6]朱祖祥.土壤学[M].北京:农业出版社,1983.
[7]谈近强,刘洪宜,卢瑛,等.中山市不同土地利用方式下土壤肥力特性的剖面分布特征[J].广东农业科学,2015,42(6):45-50.
[8]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.
[9]全国农业分析标准化技术委员会. NY/T 295—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,1996.
[10]中国林业科学研究院林业研究所森林土壤研究室. 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.
[11]李林,张晓光,武中波.中性土壤阳离子交换量测定应注意的事项[J].中国环境监测,2004,20(6):4.
[12]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(7):148-150.
[13]沈纯仪,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):144-147.
[14]陈玉娥,史靖,王惠芝.自动电位滴定在石灰性土壤阳离子交换量测定中的应用[J].河北林业科技,1998,6(2):27.