硫酸除氯在含氯土壤有机质测定中的应用  

Measurement of the Content of Organic Matter in the Soils Containing Cl-

作　　者：康金花[1] 郝丽[1] 

机构地区：[1]中国科学院新疆生态与地理研究所,乌鲁木齐830011

出　　处：《干旱区研究》2004年第1期67-71,共5页Arid Zone Research

摘　　要：通过对土壤有机质中不同氯离子含量的测定 ,总结出了用提前加H2 SO4方法消除氯离子干扰的检索表。根据该表在测定土壤有机质时 ,用提前加H2 SO4的方法能消除氯离子的部分干扰。试验结果是 :当有机质小于2 3.0 g·kg-1时 ,用提前加硫酸的方法能消除氯离子的最低含量为 4 0 g·kg-1;当有机质为 2 3.0～ 32 .0 g·kg-1时 ,用提前加硫酸的方法能消除氯离子的最低含量为 12g·kg-1;当有机质为 32 .0～ 38.0g·kg-1时 ,用提前加硫酸的方法能消除氯离子的最低含量为 4 g·kg-1。因此 ,在土壤有机质分析工作中 ,对于一般的土壤都可以用提前加H2 SO4的方法来消除氯离子的干扰。In this paper, the measurement of organic matter content in the soils containing Cl- is carried out, and the retrieval table for eliminating the disturbance of Cl- by adding H 2SO 4 in advance is developed. The experimental results are as follows: (1) The disturbance of Cl- can be eliminated for 18.0% when the organic matter content in soils ≤0.2%; (2) The disturbance of Cl- can be eliminated for 8.0% when the organic matter content in soils varies in a range of 0.2～0.6%; (3) The disturbance of Cl- can be eliminated for 6.0% when the organic matter content in soils varies in a range of >0.6%～<1.0%; (4) The disturbance of Cl- can be eliminated for 26.0% when the organic matter content in soils varies in a range of 1.0～1.3%; (5) The disturbance of Cl- can be eliminated for 14.0% when the organic matter content in soils varies in a range of 1.3～ 1.6%; (6) The disturbance of Cl- can be eliminated for 8.0% when the organic matter content in soils varies in a range of 1.6～1.9%; (7) The disturbance of Cl- can be eliminated for 4.0% when the organic matter content in soils varies in a range of 1.9～2.3%; (8) The disturbance of Cl- can be eliminated for 1.6% when the organic matter content in soils varies in a range of 2.3～2.8%; (9) The disturbance of Cl- can be eliminated for 1.2% when the organic matter content in soils varies in a range of 2.8～3.2%; (10) The disturbance of Cl- can be eliminated for 0.6% when the organic matter content in soils varies in a range of 3.2～3.6%; (11) The disturbance of Cl- can be eliminated for 0.4% when the organic matter content in soils varies in a range of 3.6～ 3.8%; (12) The disturbance of Cl- can be eliminated for 50.0% when the organic matter content in soils is 4.0%; (13) The disturbance of Cl- can be eliminated for 42.0% when the organic matter content in soils varies in a range of 4.0～4.49%; (14) The disturbance of Cl- can be eliminated for 32.0% when the organic matter content in soils varies in a range of 4.4～4.5%; and (15) The disturbance of Cl

关 键 词：氯离子 土壤有机质 硫酸除氯 土壤肥力 

分 类 号：S158[农业科学—土壤学]