CAJ | 학술논문

采用紫外分光光度法及离子色谱法检测垃圾渗滤液中的总氮，针对不同的检测结果，分析两种方法的准确性，并对导致方法不准确的原因进行探讨。结果表明，离子色谱法所测值高于氨氮值的6.7%，其标准曲线在0.05~10.00 mg/L呈现良好的线性，方法检出限为0.018 mg/L，相对标准偏差介于0.84%~4.05%，加标回收率介于95.1%~98.4%，精密度和准确度满足要求，适用于垃圾渗滤液中总氮的测定；紫外分光光度法的标准曲线和精密度虽满足检测要求，但总氮的测定值低于氨氮值的16.0%；导致检测结果偏低的主要原因是消解过程中产生的细微悬浮颗粒对紫外光有散射作用，可通过超滤膜的过滤减弱这一影响。
채용자외분광광도법급리자색보법검측랄급삼려액중적총담，침대불동적검측결과，분석량충방법적준학성，병대도치방법불준학적원인진행탐토。결과표명，리자색보법소측치고우안담치적6.7%，기표준곡선재0.05~10.00 mg/L정현량호적선성，방법검출한위0.018 mg/L，상대표준편차개우0.84%~4.05%，가표회수솔개우95.1%~98.4%，정밀도화준학도만족요구，괄용우랄급삼려액중총담적측정；자외분광광도법적표준곡선화정밀도수만족검측요구，단총담적측정치저우안담치적16.0%；도치검측결과편저적주요원인시소해과정중산생적세미현부과립대자외광유산사작용，가통과초려막적과려감약저일영향。
Using UV speetrophotometry and ion ehromatography to deteet total nitrogen( TN)in landfill leaehate,analysis the two methods’aeeuraey and investigate reasons from the different test results. The re-sults show that when using the ion ehromatography,the values of total nitrogen are higher than 6. 7% of ammonia nitrogen,standard eurve presents exeellent linearity in 0. 05 ~10. 00 mg/L,deteetion limits is 0 . 018 mg/L and RSD is between 0 . 84% ~4 . 05%,reeoveries is between 95 . 1% ~98 . 4%,preeision and aeeuraey are also meet the requirements. So the IC method is applieable to the determination of total nitrogen in landfill leaehate;The standard eurve and preeision ean satisfy the testing requirements,but the measured results of total nitrogen is lower than 16 . 0% of ammonia nitrogen when using UV speetropho-tometry. The main reason is that the tiny suspended partieles produeed during the digestion seattered the UV,the filtration by ultrafiltration membrane ean reduee this effeet.