Comparison of methods for the concentration of suspended sediment in river water for subsequent chemical analysis

1986 ◽  
Vol 20 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Arthur J. Horowitz
Keyword(s):  
Chemical Analysis ◽  
River Water ◽  
Suspended Sediment ◽  
Comparison Of Methods ◽  
Subsequent Chemical

Measured and Modelled Chlorinated Contaminant Distributions in the St. Clair River Water

1986 ◽  
Vol 21 (3) ◽  
pp. 332-343 ◽  
Author(s):  
C.H. Chan ◽  
Y.L. Lau ◽  
B.G. Oliver
Keyword(s):  
River Water ◽  
Suspended Sediment ◽  
Water Samples ◽  
Concentration Distribution ◽  
Suspended Solids ◽  
Industrial Area ◽  
Concentration Profiles ◽  
Detroit River ◽  
Chemical Partitioning ◽  
Transverse Mixing

Abstract The concentration distribution of hexachlorobutadiene (HCBD), pentachloro-benzene (QCB), hexachlorobenzene (HCB) and octachlorostyrene (OCS) in water samples from transects across the upper and lower St. Clair River and the upper Detroit River were determined on four occasions in 1985. The data show a plume of these contaminants from the Sarnia industrial area. The fluxes and concentration profiles of the contaminants at Port Lambton have been modelled success fully using a simple transverse mixing model. A study on the chemical partitioning between the “dissolved” and “suspended sediment” phases shows that an important contaminant fraction is carried in the river by the suspended solids, particularly for lipophilie compounds such as HCB and OCS,

A comparison of methods for determining proximate carbon fractions of forest litter

1990 ◽  
Vol 20 (2) ◽  
pp. 166-171 ◽  
Author(s):  
Michael G. Ryan ◽  
Jerry M. Melillo ◽  
Andrea Ricca
Keyword(s):  
Chemical Analysis ◽  
Forest Products ◽  
Forest Litter ◽  
Data Availability ◽  
Residual Variance ◽  
Comparison Of Methods ◽  
Predictive Equations ◽  
Carbon Fractions ◽  
Decomposition Models ◽  
The Relationship

Ten forest litters with decomposition state varying from 16.6 to 100% weight remaining were partitioned into sub-samples; each subsample was analyzed for proximate carbon fractions using one of two chemical analysis procedures (forage fiber and forest products analyses). Proximate carbon fractions from the simpler forage fiber techniques accurately estimated extractives, cellulose, lignin, and acid-hydrolyzed carbohydrates (R2 > 0.83) determined by the more complex forest products analyses. Decomposition state accounted for most of the residual variance and significantly improved predictive equations for lignin and extractives. The relationship between proximate carbon fractions from the different techniques also varied somewhat among wood, hardwood leaves, and conifer leaves; however, variations were minor relative to the overall trend. Equations developed can be used to extend data availability for developing and validating decomposition models.

In Situ Assessment of the Paraguay River Water, in Brazilian Pantanal, by Means of Micronucleus Assay with Fish and Chemical Analysis

2013 ◽  
Vol 90 (4) ◽  
pp. 427-433 ◽  
Author(s):  
Vânia Maria Sartini Dutra Pimenta ◽  
Joaquim Manoel da Silva ◽  
Júlio César Nepomuceno ◽  
Luiz Alfredo Pavanin
Keyword(s):  
Chemical Analysis ◽  
River Water ◽  
Micronucleus Assay ◽  
Paraguay River ◽  
In Situ Assessment ◽  
Brazilian Pantanal

Effects of Suspended Sediment on the Biodegradation and Mineralization of Phenanthrene in River Water

2011 ◽  
Vol 40 (1) ◽  
pp. 118-125 ◽  
Author(s):  
Xinghui Xia ◽  
Zhui Zhou ◽  
Chuanhui Zhou ◽  
Guohua Jiang ◽  
Ting Liu
Keyword(s):  
River Water ◽  
Suspended Sediment
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