Application of ICP-QMS for the determination of ultratrace-levels of 226Ra in geothermal water and sediment samples

2010 ◽  
Vol 286 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Tsuey-Lin Tsai ◽  
Chun-Chih Lin ◽  
Tsung-Yuan Wang ◽  
Hwa-Jou Wei ◽  
Lee-Chung Men
Keyword(s):  
Geothermal Water ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Water And Sediment Samples

Determination of Twenty-one Chloroanisoles in Water and Sediment Samples

1988 ◽  
Vol 71 (4) ◽  
pp. 803-807
Author(s):  
Hing-Biu Lee
Keyword(s):  
Molecular Ions ◽  
Sediment Samples ◽  
Mass Selective Detector ◽  
Water And Sediment ◽  
Soxhlet Apparatus ◽  
Selective Detector ◽  
Electron Impact Mass ◽  
Impact Mass ◽  
Water And Sediment Samples

Abstract A simple and sensitive method for the determination of 19 chloroanisoles and 2 chloromethylanisoles was developed for water; another method was developed for sediment samples. Water samples were extracted with dichloromethane; sediments were extracted with a mixture of hexane and acetone in a Soxhlet apparatus. The extracts were concentrated on a Snyder column and then were cleaned up on an activated Florisil column. The anisoles were separated by either an OV-1 or SPB-5 capillary column and were detected by an electroncapture or a mass selective detector. Recoveries of chloroanisoles in fortified water and sediment samples generally ranged between 70 and 85%. The method detection limits were 0.02 /tg/L and 0.002 Mg/g for mono- and di-chloroanisoles in water and sediments and 0.002 jug/L and better than 0.001 jig/g for tri-, tetra-, and pentachloroanisoles in those matrixes. The electron-impact mass spectra of all chloroanisoles exhibited intense peaks for the molecular ions (M+ ), as well as (M - 43)+ and either (M - 15)+ or (M - 30)+ fragments. These masses were used as characteristic ions for quantitative and confirmation purposes.

scholarly journals Determination of organic and inorganic mercury species in water and sediment samples by HPLC on-line coupled with ICP-MS

Talanta ◽  
2009 ◽  
Vol 80 (1) ◽  
pp. 207-211 ◽  
Author(s):  
José Soares dos Santos ◽  
Miguel de la Guárdia ◽  
Augustin Pastor ◽  
Maria Lúcia Pires dos Santos
Keyword(s):  
Inorganic Mercury ◽  
Mercury Species ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Icp Ms ◽  
On Line ◽  
Water And Sediment Samples

Determination of organometallic compounds in surface water and sediment samples with SPME-CGC-ICPMS

1999 ◽  
Vol 130 (4) ◽  
pp. 241-251 ◽  
Author(s):  
Tom De Smaele ◽  
Luc Moens ◽  
Pat Sandra ◽  
Richard Dams
Keyword(s):  
Surface Water ◽  
Organometallic Compounds ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Water And Sediment Samples
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