CAJ | 학술논문

通过对比分析，选择氨气敏电极法快速测定烟用聚丙烯丝束滤棒成型水基胶中的氨氮含量，考察了该方法的测定条件及影响因素。结果表明：①氨气敏电极具有很高的选择性，在强碱性条件下，采用EDTA作掩蔽剂，几乎所有无机离子对测定无影响；②部分挥发性胺对测定有明显干扰,表面活性剂含量低于0.1%时无干扰；③最优条件下方法的定量限0.67μg/mL，回收率96.1％～104.9％，RSD<4％。
통과대비분석，선택안기민전겁법쾌속측정연용취병희사속려봉성형수기효중적안담함량，고찰료해방법적측정조건급영향인소。결과표명：①안기민전겁구유흔고적선택성，재강감성조건하，채용EDTA작엄폐제，궤호소유무궤리자대측정무영향；②부분휘발성알대측정유명현간우,표면활성제함량저우0.1%시무간우；③최우조건하방법적정량한0.67μg/mL，회수솔96.1％～104.9％，RSD<4％。
Ammonia gas-sensing electrode method was developed to determine ammonia nitrogen in water-borne adhesive applied on polypropylene fiber tow filter rod. Results showed that: 1) the method was highly selective. Almost all other inorganic ions showed no influence on determination under strong alkaline conditions with EDTA as masking agent; 2) significant interferences from some volatile amines were observed. There were some interferences if surfactants contents were higher than 0.1%;3) under optimum conditions, the quantification limit was 0.67 μg/mL and the recovery was 96.1%~104.9%. RSD was less than 4%.