期刊论文

中文

南华大学学报(自然科学版)

1673-0062

2009

23

4

88-91

10.19431/j.cnki.1673-0062.2009.04.021

本校为第一机构

在pH 5.2 Hac-NaAc缓冲溶液和PVA存在的条件下,H2O2 在Fe2+的催化作用下产生的羟自由基·OH,·OH氧化I-并生成的 I-3,而I-3又与带正电荷的结晶紫形成缔合物微粒,导致体系溶液共振光散射明显增强.在546.8 nm处,共振光强度的改变值ΔI溶液中H2O2的含量在0.017～0.714 μg/mL范围内呈良好的线性关系,据此建立了一种共振光散射法检测H2O2,方法检出限5.10×10-3 μg/mL H2O2,相对标准偏差为3.1%～3.5%,该方法用于水样的测定,加标回收率为96.1%～102%,结果满意.

In pH 5.2 HAc-NaAc buffer solution and the presence of PVA,the ·OH formed by Fenton reaction oxidized the excess I-into I-3,and the I-3 combined with CV^＋ to form ion complex particle [I-3-CV＋ ] which result in the enhancement of RLS of the system.The maximum RLS wavelength of the system was 546.8 nm.The enhanced RLS intensity of the systems is proportional to the concentration of the hydrogen peroxide in the range of 0.017-0.714 μg/mL.The detection limit was 5.10× 10^-3 μg/mL,the RSD were 3.1%~3.5%.This method was used to determine hydrogen peroxide in wa...