CAJ | 학술논문

　　湿法炼锌浸出液中存在多金属组分，如Zn(II)和Co(II)，针对重叠峰分离提出一种基于类Gaussian分布的线性扫描极谱重叠峰分离方法。通过分析线性扫描极谱曲线的特性构造类Gaussian分布作为待分离重叠峰子峰的模型，并利用多分辨率小波分解确定各子峰波峰和波谷位置，基于该模型及确定值对重叠峰及其导数峰进行非线性加权最小二乘(nonlinear weighted least squares, NWLS)拟合，根据重构参数将重叠峰分离为独立的子峰，实现该类重叠峰的分离。该类重叠峰分离的结果表明：多分辨率小波分解的分辨误差小于1%，NWLS 拟合的分离精度高于96%，本方法可以有效分离Zn(II)和Co(II)产生的极谱重叠峰。
　　습법련자침출액중존재다금속조분，여Zn(II)화Co(II)，침대중첩봉분리제출일충기우류Gaussian분포적선성소묘겁보중첩봉분리방법。통과분석선성소묘겁보곡선적특성구조류Gaussian분포작위대분리중첩봉자봉적모형，병이용다분변솔소파분해학정각자봉파봉화파곡위치，기우해모형급학정치대중첩봉급기도수봉진행비선성가권최소이승(nonlinear weighted least squares, NWLS)의합，근거중구삼수장중첩봉분리위독립적자봉，실현해류중첩봉적분리。해류중첩봉분리적결과표명：다분변솔소파분해적분변오차소우1%，NWLS 의합적분리정도고우96%，본방법가이유효분리Zn(II)화Co(II)산생적겁보중첩봉。
A resolution method based on Gaussian-like distribution for overlapped linear sweep polarographic peaks was proposed to simultaneously detect the polymetallic components, such as Zn(II) and Co(II), coexisting in the leaching solution of zinc hydrometallurgy. A Gaussian-like distribution was constructed as the sub-model of overlapped peaks by analyzing the characteristics of linear sweep polarographic curve. Then, the abscissas of each peak and trough were pinpointed through multi-resolution wavelet decomposition, the curve and its derivative curves were fitted by using nonlinear weighted least squares (NWLS). Finally, overlapped peaks were resolved into independent sub-peaks based on fitted reconstruction parameters. The experimental results show that the relative error of half-wave potential pinpointed by multi-resolution wavelet decomposition is less than 1%and the accuracy of Ip fitted by NWLS is higher than 96%. The proposed resolution method is effective for overlapped linear sweep polarographic peaks of Zn(II) and Co(II).