酚二磺酸分光光度法测定水中硝酸盐氮的条件控制  

Determination of Condition Control of Nitrate Nitrogen in Water with Phenol Disulfonic Acid Spectrophotometry

作　　者：张航[1] 张宁娟 

机构地区：[1]宝鸡市环境保护监测站,宝鸡721006 [2]宝鸡市陈仓区环境保护监测站,宝鸡721300

出　　处：《价值工程》2012年第30期296-298,共3页Value Engineering

摘　　要：对酚二磺酸分光光度法测定水中硝酸盐氮进行了验证性的探讨,结果表明该方法具有测量范围较宽,显色稳定的优点,但此方法操作繁琐,尤其是对水样的前处理控制不好将对硝酸盐氮含量的测定影响较大。其线性区间在0.02-2.0mg/L范围内,相关系数等于0.9999,硝酸盐氮浓度小于0.02mg/L或大于2.0mg/L时,测量结果将产生一定的误差。This paper verified the method to determine the nitrate nitrogen in water by phenol disulfonic acid spectrophotometry. The results showed that the method had a wide measurement range, and its colour was stable, but its operation is complicated, especially the pre-treatment of the water. If pre-treatment of the water can not be controlled, it will cause greater impact. Its linear range is among 0.02- 2.0mg/L, and the correlation coefficient is equal to 0.9999. When the nitrate nitrogen concentration is less than 0.02mg/L or greater than 2.0mg/L, the measurement results will have a certain margin of error.

关 键 词：硝酸盐氮 酚二磺酸法 实验条件控制 

分 类 号：G633.8[文化科学—教育学]