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Method for determination of stable carbon isotope ratio of methylnitrophenols in atmospheric particulate matter

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Figure

Fig. 1.Figure 1     Location of sampling sites.
Table 1. Target compounds, internal standards, internal standardsrecovery control, HPLC collection windows and GC column usedfor methylnitrophenol analysis.
Table 2. Recovery for internal standards and recovery relative to internal standards for target compounds spiked on clean filters and on filterscontaining atmospheric particulate matter.
Fig. 3.Figure 3  Comparison of online and offline isotope ratio measurements for methylnitrophenols
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