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IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

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Table 1. Selected methods for analysis of naphthalene<br />

Sample matrix Sample preparation Assay<br />

procedure a<br />

Air Adsorb (charcoal or Chromosorb<br />

W); desorb (carbon disulfide)<br />

Drinking-, groundand<br />

surface water<br />

Drinking-water and<br />

raw source water<br />

Adsorb (solid sorbent); desorb<br />

(organic solvent)<br />

Adsorb (solid sorbent); desorb<br />

(organic solvent)<br />

Purge (inert gas); trap<br />

(Chromosorb W); desorb into<br />

capillary GC column<br />

Purge (inert gas); trap<br />

(Chromosorb W); desorb into<br />

capillary GC column<br />

Drinking-water Extract in liquid–solid extractor;<br />

elute with dichloromethane; dry;<br />

concentrate<br />

Wastewater,<br />

municipal and<br />

industrial<br />

Extract with dichloromethane;<br />

dry; concentrate<br />

Extract with dichloromethane;<br />

dry; concentrate<br />

Add isotope-labelled analogue;<br />

extract with dichloromethane; dry<br />

over sodium sulfate; concentrate<br />

GC/FID 1–10 μg/sample;<br />

4 μg/sample<br />

Limit of detection Reference<br />

Eller (1994) [Method 1501];<br />

Occupational Safety and Health<br />

Administration (1990) [Method 35]<br />

HPLC/UV 0.6–13 μg/sample Eller (1994) [Method 5506]<br />

GC/FID 0.3–0.5 μg/sample Eller (1994) [Method 5515]<br />

GC/MS 0.04 μg/L Environmental Protection Agency<br />

(1995a) [Method 524.2]<br />

GC/PID 0.01–0.05 μg/L Environmental Protection Agency<br />

(1995b) [Method 502.2]<br />

HPLC/UV/FD 2.20 μg/L Environmental Protection Agency<br />

(1990a) [Method 550.1]<br />

HPLC/UV or<br />

GC/FID<br />

1.8 μg/L Environmental Protection Agency<br />

(1996a,b, 1999a) [Methods 610,<br />

8100 & 8310]<br />

GC/MS 1.6 μg/L Environmental Protection Agency<br />

(1999b) [Method 625]<br />

GC/MS 10 μg/L Environmental Protection Agency<br />

(1999c) [Method 1625B]<br />

NAPHTHALENE 369

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