CAJ | 학술논문

依据GB 11894-89，对测定水质总氮时空白吸光值过高的现象进行了分析。对不同纯度的K2S2O8试剂，不同等级的试验用水，不同方式洗涤的玻璃器皿和不同消解时间等四项因素进行了比对试验，结果选用经阴阳离子交换树脂处理的去离子水，(1+35)H2SO4浸泡的玻璃器皿和纯度大于99.0%的进口K2S2O8试剂及优级纯氢氧化钠试剂配成的碱性K2S2O8消解液和消解时间为30min条件下测得结果的空白吸光值为最优条件。
의거GB 11894-89，대측정수질총담시공백흡광치과고적현상진행료분석。대불동순도적K2S2O8시제，불동등급적시험용수，불동방식세조적파리기명화불동소해시간등사항인소진행료비대시험，결과선용경음양리자교환수지처리적거리자수，(1+35)H2SO4침포적파리기명화순도대우99.0%적진구K2S2O8시제급우급순경양화납시제배성적감성K2S2O8소해액화소해시간위30min조건하측득결과적공백흡광치위최우조건。
According to GB 11894-89, the blank absorbency of total nitrogen in water was always higher than the standard data (0.03), So the phenomenon was analyzed.The contrastive experiments were made and the result were influenced by the four different factors, reagent purity, grade trial water, way of wash the glassware and digestion time. The optimal condition is using ultra water, immersing the glassware in (1+35) H2SO4, purity of K2S2O8 and NaOH (GR), 30min’s dispel time.