CAJ | 학술논문

样品用乙酸乙酯提取、酸性氧化铝去脂、碳酸钾溶液反萃取、乙酸酐衍生后，正己烷萃取衍生产物，气相色谱-ECD检测器测定，外标法定量。结果表明：3种化合物在5～100μg/L范围内线性关系良好，相关系数R2＞0.999，检测限为5μg/kg，对硝基酚钠的回收率为86.4％～89.6％，邻硝基酚钠的回收率为82.8％～84.3％，2-甲氧基-5-硝基苯酚钠的回收率为89.9％～92.2％，相对标准偏差均＜15％。该方法适用于鱼和虾可食部分中复硝酚钠的常规残留检测。
양품용을산을지제취、산성양화려거지、탄산갑용액반췌취、을산항연생후，정기완췌취연생산물，기상색보-ECD검측기측정，외표법정량。결과표명：3충화합물재5～100μg/L범위내선성관계량호，상관계수R2＞0.999，검측한위5μg/kg，대초기분납적회수솔위86.4％～89.6％，린초기분납적회수솔위82.8％～84.3％，2-갑양기-5-초기분분납적회수솔위89.9％～92.2％，상대표준편차균＜15％。해방법괄용우어화하가식부분중복초분납적상규잔류검측。
After the samples were extracted by ethyl acetate,the supernatant were cleansed by acidic a-lumina and extracted by potassium carbonate.The extracts were then reacted with acetic anhydride.The products were detected by gas chromatography with ECD detector via an external standard method follow-ing being extracted by n-hexane.The linearity of three compounds were held in 5 ~1 00 μg/L,with cor-relation coefficient R2 >0.999 .The detection limits for the GC method (S/N=3 )of the nitrophenolate were 5 μg/kg.The tests for recovery were carried by addition of standard at concentration of 1 0 ~1 00μg/kg.The result indicated that the residue content of p-nitrophenol sodium,o-nitrophenol sodium and 2-methoxy-5-nitropenolate sodium were 86.4% ~89.6%,82.8% ~84.3% and 89.9% ~92.2%, respectively,while the relative standard deviations were less than 1 5%.This method can be used to de-termine the residue content of nitrophenolate in edible portion of fish and shrimp.