摘要:

Ambient sulfates, total suspended particulates (TSP), and ozone data were collected in rural areas of New York and New Jersey as part of a study conducted jointly by the New York State Department of Environmental Conservation and the Interstate Sanitation Commission during July and August 1975. Relationships between these contaminants and various meteorological systems were examined. The sulfate and TSP data were obtained from 24‐hour integrated high volume samples obtained on a daily basis at seven rural sites with the emphasis in this paper being on two sites: Whiteface Mountain, N.Y., and High Point, N.J. The sulfate concentrations were found to be highest during four distinct periods which were generally defined by anticyclonic stagnation and/or return flow of maritime tropical air. The highest values recorded at Whiteface Mountain and High Point were 24 μg/m3and 20 μg/m3, respectively, in the period from July 21 through 25. During the other three periods, a maximum of at least 15 μg/m3was observed at one or both sites. Coincidence of the high level periods at the two sites separated by approximately 200 miles and at five other rural New York State sites during most of the study is a strong indication of long‐range transport. ‐The maximum sulfate concentration recorded during the study was 38 μg/m3at Schoharie, N.Y.

ISSN:0360-1226    

DOI:10.1080/10934527709374729

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

A design is given for a fume scrubber that is attached to a microwave oven that is used to wet ash plant samples with perchloric‐nitric acid mixtures prior to analysis for trace elements.

ISSN:0360-1226    

DOI:10.1080/10934527709374730

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934527709374731

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

In the statistical analysis of the environmental sampling data the empirical observation of the best representation of the data by a log‐normal distribution is theoretically proved. The consequences of this proof in the data analysis is discussed and an example utilizing data from a field study is given to illustrate the appropriateness of using the log‐normal statistics.

ISSN:0360-1226    

DOI:10.1080/10934527709374732

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

The equilibrium existing between a metal ion and a mixture of ligands in solution can be described in terms of meaningful stability constants and stoichiometries under Schubert conditions (i.e. [Lt]>>[M]). It is shown that for a mixture of ligands an average stability constant can be defined for each stoichiometry which is represented in the system. The average stability constants so‐defined can be expressed as a weighted average of the separate stability constants of the individual complexes present in the mixture. The term conditional limiting average stability product (CLASPC) is suggested to describe such stability constants, and to indicate that their value depends on the concentration units employed. The concepts developed here are of value in analyzing the complexation behavior of natural multi‐ligand systems such as humic and fulvic acids, and extracts from soil, sewage sludge and poultry litter.

ISSN:0360-1226    

DOI:10.1080/10934527709374733

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934527709374734

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934527709374728

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor