Interstitial Water Sampling in Ecotoxicological Testing: Partitioning of a Cationic Surfactant

2009 ◽  
pp. 138-138-11 ◽  
Author(s):  
CA Pittinger ◽  
VC Hand ◽  
JA Masters ◽  
LF Davidson
Keyword(s):  
Cationic Surfactant ◽  
Interstitial Water ◽  
Water Sampling

An Interstitial Water-Sampling Receptacle for Intertidal Mud Flats

1971 ◽  
Vol 28 (7) ◽  
pp. 1049-1051 ◽  
Author(s):  
Edwin P. Creaser Jr.
Keyword(s):  
Interstitial Water ◽  
Water Sampling ◽  
Service Unit ◽  
Intertidal Mud Flats

In the apparatus described, a common receptacle may be used in conjunction with a pressure-compensating chamber or a vacuum service unit. The pressure-compensating unit is operable at any stage of the tide and requires from 12 to 24 hr to obtain a sample. The vacuum extract unit is operable on the exposed flat at low tide only and usually requires from 20 to 30 min to obtain a sample.

Enhancing the Surface Properties of Some Amine Alginate Salts with Cationic Surfactant

2014 ◽  
Vol 51 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Dalia E. Mohamed ◽  
Amr O. Habib ◽  
Ismail Aiad
Keyword(s):  
Surface Properties ◽  
Cationic Surfactant

The effects of contaminated sediments of the Blesbok Spruit near Witbank on water quality and the toxicity thereof to Daphnia pulex

1999 ◽  
Vol 39 (10-11) ◽  
pp. 173-176 ◽  
Author(s):  
Liesl Hill ◽  
Sebastian Jooste
Keyword(s):  
Surface Water ◽  
Mine Drainage ◽  
Interstitial Water ◽  
Stream Water ◽  
Daphnia Pulex ◽  
Contaminated Sediments ◽  
Toxicity Tests ◽  
Major Route ◽  
Acute Toxicity Tests ◽  
Route Of Exposure

With the increasing focus on environmental issues, the objective of this study is to evaluate the potential impact of contaminated sediments of the Blesbok Spruit near Witbank - which receives acid mine drainage (AMD) inter alia - on biota. Direct transfer of chemicals from sediments to organisms is considered to be a major route of exposure for many species, and therefore focusing attention on sediment contamination and highlighting the fact that sediments are an important resource. Acute toxicity tests were performed on Daphnia pulex using both extracted sediment interstitial water and surface water. Chemical analyses were also performed on the sediment, interstitial water and surface water samples. The toxicity results suggest that metal toxicity adds significantly to the toxicity of the stream water which is enhanced by the effect of pH. The pH of the stream and interstitial water was consistently below 4.5.

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