PMF-AMS Analysis Guide

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Introduction

The PMF Evaluation Panel consists of 3 Igor procedure files (ipfs) called PMF_Execution, PMF_ViewResults, and PMF_Scatter. This wiki serves as the help and documentation for the software. To run PMF with the panel, the PMF executable and associated files, accessed separately, are required (see Section 3, Installing PMF with Igor).

The ipfs were written by Ingrid Ulbrich and Donna Sueper (Jimenez Group, University of Colorado, Boulder) and Greg Brinkman (Hannigan Group, University of Colorado, Boulder). Questions about this codecan be addressed to Ingrid or Donna at ulbrich@colorado.edu or dsueper@colorado.edu.

PMF (Positive Matrix Factorization) was developed by Dr. P. Paatero (Dept. of Physics, University of Helsinki). One of the original papers describing this method is Paatero, 1997 P. Paatero, Least squares formulation of robust non-negative factor analysis, Chemometrics and Intelligent Laboratory Systems 37 (1997), pp. 23–35. First time users to PMF are encouraged to first read the documentation by Paatero regarding PMF (see Section 9, Other Resources).

This Igor toolkit was intended for use in analyzing AMS data, but there are only few assumptions in the toolkit relating to AMS-type data.

A Message to Contributors

Installing PMF with Igor

Creating the Organics and Error Matrices

Perform PMF Analysis *Step 1*

View PMF Analysis Results *Step 2*

Compare PMF Results with External Factors *Step 3*

Considerations for Choosing a Solution

Other Resources