亚硝酸盐氮测定中的稳定性试验

A Steadiness Test in the Measurement of Nitrite Nitrogen

对亚硝酸盐氮测定清洁水样及1.00 mg/L亚硝酸盐氮标准使用溶液分别进行了稳定性试验。试验表明,清洁水样置冰箱内至少可保存30天,1.00 mg/L亚硝酸盐氮标准溶液可保存180天。大大延长了国标方法中规定的24 h的保存期,既提高了工作效率又节约试剂,在实际工作中具有一定的可行性及推广性。

The test is conducted on the steadiness of nitrite nitrogen analysis sample and 1.00 mg/L standard solution of nitrite nitrogen.The result reveals that water sample can be stored in the refrigerator for at least 30 days while 1.00 mg/L standard solution of nitrite nitrogen for 180 days.It dramatically lengthens the storage time limit of 24 hours regulated by the national standard and helps to improve working efficiency and reduce solution consumption.It proves tobe feasible and should be popularized.