Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2011 Oct 5;401(10):3045–3067. doi: 10.1007/s00216-011-5355-y

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2011

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

PMC Copyright notice

Fig. 11 — f ₄₄ vs. f ₄₃ in the mass spectra of ambient OOA and various HULIS and fulvic acid samples. The dotted lines define the triangular space where ambient OOA components fall. The O/C ratios were estimated using the formula given in Aiken et al. [31]: (Adapted from Fig. 4 in Ref. [14], reprinted with permission)

Inline graphic — f ₄₄ vs. f ₄₃ in the mass spectra of ambient OOA and various HULIS and fulvic acid samples. The dotted lines define the triangular space where ambient OOA components fall. The O/C ratios were estimated using the formula given in Aiken et al. [31]: (Adapted from Fig. 4 in Ref. [14], reprinted with permission)