Nitrite variability in coastal North Carolina rainwater and its impact on the nitrogen cycle in rain

Article Abstract:

Current methods for analyzing nitrite levels in rainwater have been less than precise. Either contamination of the specimen or levels of nitrite below the detectable level of the techniques have resulted in questionable data. A new technique, however, has been studied, and has produced interesting results. The study examined rain water acquired from Wilmington, NC for 21 months. The results showed that during El Nino rains and summer tropical rains nitrite levels were less than half that of non-El Nino and tropical rains. This suggests a terrestrial nitrite source.

North Carolina, Pollution, Nitrites, Chemistry, Analytic, Analytical chemistry

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Comment on "Formic and acetic acids in coastal North Carolina rainwater." (includes response)

Article Abstract:

Ambient air may have introduced errors into an experiment that involved the measurement of acetic and formic acids in rainwater. The results of the experiment, which was conducted by G. Brooks Avery Jr. et al, also point to a vapor transport mechanism as a reason for contamination. Initially, Avery et al comment that the vapor transport mechanism has a minute effect. However, after measuring ambient air's effects, Avery et al believe vapor transport introduces significant amounts of error in their study.

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Comment on "Formic and Acetic Acids in Coastal North Carolina Rainwater." (includes response)

Article Abstract:

Research of North Carolina rainwater acidity by G. Brooks Avery et al contains errors. The study fails to identify the type of acidity measured and wrongly assumes that the hydrogen ion concentration is a measure of the acidity contributed by formic and acetic acids. Other errors involving wrong assumptions and mistakes in calculation are presented. A reply by Joan D. Willey and G. Brooks Avery Jr. is also included.

Measurement, Acids

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