现代受体模式评述

A Review on Modern Receptor Modelling

传统的数学受体模式可概括地分为两大类,即化学质量平衡法(CMB)和多元技术(MVT),CMB由于要求已知所求源的成分谱。从而在应用中受到限制。MVT以因子模式为中心,由于因子模式的本征向量解法求解不唯一或称误差太大,使得MVT给人一种人造数据的印象。近年来,元素示踪体系将受体模式的应用范围从城市尺度扩展到区域尺度,由于该体系经验性太强,未能得到广泛的应用。本文针对现代受体模式中存在的一些关键性问题作了系统的评述。

Abstract--Traditional mathematical receptor models can be broadly classifiedinto two categories: chemical mass balance ( CMB) and multivariate Technique ( MVT) . The application of CMB is limited by the requirement of knowing the signatures of sources to be resolved. MVT based on the factor model has a suspect of ' artificial data',because the solution derived from the algorithm of eigenvectors is not unique or with too great uncertainty. Elemental tracer system developed recently expands the use of receptor modelling from city scale to region scale, but it has notbeen applied widely becauee it depends too much on experience.This article discusses systematically some key problems of modern receptor modelling.