共振散射光谱法测定聚丙烯酰胺浓度

Resonance Scattering Spectral Method for the Determination of PAM

中文关键词:  聚丙烯酰胺  共振散射光谱法  次氯酸钠

英文关键词:polyacrylamide  resonance scattering spectral method  sodium hypochlorite

中文摘要:

      在醋酸介质中，聚丙烯酰胺（PAM）与次氯酸钠溶液作用生成疏水性的氯酸胺微粒，该微粒体系在480 nm处产生强的共振散射峰.PAM的质量浓度在1.6～80.0 mg/L范围内与480 nm处共振散射光强度成线性关系，检出限为0.30 mg/L PAM.研究了共存物质对共振散射光谱法测定PAM浓度的影响，方法的选择性较好，应用于合成废水中PAM的测定，结果满意.

英文摘要:

      In the HAc medium, polyacrylamide (PAM) reacts with NaClO to form hydrophobic ammonia chlorate nanoparticles, which have a strong resonance scattering (RS) peak at 480 nm. The RS intensity at 480 nm (I_{480 nm}) increases linearly with the PAM concentration in the range of 1.6～80.0 mg/L, and the detection limit is 0.30 mg/L. The effect of coexistent substances on the determination of PAM has been studied, showing that this RS method has a good selectivity. PAM in synthesized waste water samples was detected with this method with satisfactory results.