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Chromatografy Methods for Environmental - Ando D.J.

Ando D.J. Chromatografy Methods for Environmental - Wiley publishing , 2003. - 265 p.
Download (direct link): chromatography2003.pdf
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In addition, for the major/minor constituents three significant figures are quoted for values in the wt% range. This allows large concentrations to be quoted without the necessity to report excessive significant figures, e.g. instead of quoting 15 260 igg-1 for calcium, it is more appropriate to quote 1.526 wt%.
18
Methods for Environmental Trace Analysis
All values are quoted with a variation () of one standard deviation of the mean value.
Some common examples of certifying bodies are the National Institute for Standards and Technology (NIST) based in Washington, DC, USA, the Community Bureau of Reference (known as BCR), in Brussels, Belgium, and the Laboratory of the Government Chemist (LGC), in Teddington, Middlesex, U.K. CRMs can be either pure materials or matrix materials. Pure materials are used for the calibration of instruments, whereas matrix materials are used for the validation of a whole method from sample preparation through to the final measurement. A list of the commonly available matrix CRMs for environmental analyses is given in Table 2.1.
Table 2.1 A selection of the commonly available matrix certified reference materials for environmental analyses [1]
Code
Name
Description
Water
LGC6010
LGC6011
LGC6012
LGC6013
LGC6017
LGC6018
CRM609
CRM610
LGC6019
Hard drinking water Soft drinking water Hard drinking water Soft drinking water Rainwater (run-off)
Rainwater (run-off)
Groundwater - trace elements (low level) Groundwater - trace elements (high level) River water (River Thames, UK) - metals
Certified values for 16 metals in acidified (pH < 2) tap water (Teddington, Middlesex, UK)
Certified values for 13 metals in acidified (pH < 2) tap water (Merthyr Tydfil, Wales)
Certified values for 4 anions in acidified (pH < 2) tap water (Teddington, Middlesex, UK)
Certified values for 4 anions in acidified (pH < 2) tap water (Merthyr Tydfil, Wales)
Certified values for 11 metals in acidified (pH 2) roof run-off rainwater (Kingston-upon-Thames, Surrey, UK)
Certified values for 3 anions in roof run-off rainwater (Kingston-upon-Thames, Surrey, UK) stabilized by the addition of copper salt (10 ^gl-1)
Certified values for 5 metals in acidified (pH < 1.5) groundwater Certified values for 5 metals in acidified (pH < 1 . 5) groundwater Certified values for 12 metals in acidified (pH 2) river water (Henley-on-Thames, Berkshire, UK)
Investigative Approach for Sample Preparation 19 Table 2.1 (continued)
Code Name Description
LGC6020 River water (River Certified values for 3 anions in acidified
Thames, UK) - anions (pH 2) river water (Henley-on-Thames, Berkshire, UK)
SPS-SW1 Surface water - trace Certified values for 38 metals in surface
metals water
SPS-SW2 Surface water - trace Certified values for 44 metals in surface
metals water
CRM505 Estuarine water - trace Certified values for 4 metals in acidified
elements (pH 1.5) estuarine water
SLEW-3 Estuarine water - trace Certified values for 11 metals in
elements estuarine water collected in San Francisco Bay, CA, USA, at a depth of 5 m
CRM403 Sea water - trace Certified values for 6 metals in acidified
elements (pH 1.5) sea water
NASS-5 Sea water - trace Certified values for 10 metals in sea
elements water collected in the North Atlantic at a depth of 10 m
LGC6175 Landfill leachate - trace elements Certified values for 9 metals
LGC6176 Landfill Certified values for 4 anions and
leachate - anions chemical oxygen demand
SPS-WW1 Waste water - trace metals Certified values for 13 metals
SPS-WW2 Waste water - trace metals Certified values for 13 metals
SPS-NUTR-WW1 Waste water - anions Certified values for 5 anions and total nitrogen
SPS-NUTR-WW2 Waste water - anions Certified values for 5 anions and total nitrogen
Sediment
CRM601 Sediment - extractable elements (three-step extraction) Certified values for 5 metals
CRM320 River sediment - trace elements Certified values for 10 metals
GBW08301 River sediment - trace elements Certified values for 11 metals
SRM1939a River sediment - PCBs Certified values for 20 PCB congeners
and chlorinated and 3 chlorinated pesticides collected
pesticides from the Hudson River, New York State, USA
(continued overleaf )
20 Methods for Environmental Trace Analysis
Table 2.1 (continued)
Code Name Description
SRM1944 New York/New Jersey Certified values for 35 PCBs, 24 PAHs,
(USA) waterway 4 chlorinated pesticides and 9 metals
sediment - PCBs and collected from six sites in the vicinity
PAHs of New York Bay and Newark Bay, USA
WQB-1 Lake sediment - trace metals Certified values for 5 metals
WQB-3 Lake sediment - trace metals Certified values for 9 metals
DX-1 Lake sediment - dioxin Certified values for dioxin and furan
and furan congeners congeners
DX-2 Lake sediment - dioxin Certified values for dioxin and furan
and furan congeners congeners
EC-2 Lake sediment - organic Certified values for 10 PAHs,
contaminants 12 chlorobenzenes and hexachlorobutadiene collected from Hamilton Harbour and Lake Ontario, Canada
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