Version 10.0 – July 2014
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Description Unit Size
SEWAGE SLUDGE MATERIALS
Aged sewage sludge collected from a disused sewage works site at Heathrow in
London, UK. Dried, sterilised and ground to a powder. The extractable metal content
refers to metals soluble in aqua regia using methods based on ISO11466 (1995).
This material is intended for use as a reference material in the development,
validation or quality control of analytical methods for the determination of extractable
metals in sewage sludge.
Assessed Values
Aluminium ........................ 15100 mg/kg Magnesium ......................... 2820 mg/kg
Barium .................................. 633 mg/kg Manganese ........................... 544 mg/kg
Chromium ............................. 399 mg/kg Nickel .................................... 130 mg/kg
Cobalt .................................. 23.2 mg/kg Potassium ........................... 2030 mg/kg
Copper ................................. 464 mg/kg Sodium ................................. 397 mg/kg
Iron ................................... 22200 mg/kg Zinc ....................................... 890 mg/kg
Lead ..................................... 341 mg/kg
This material is a digested sewage sludge of mixed origin which was taken from a
city water treatment plant immediately after discharge from a digestion tank.
This material is intended for use in development, validation or quality control of
analytical methods for the determination of extractable metals in sewage sludge.
The extractable metal content refers to metals soluble in aqua regia using methods
based on ISO11466 (1995).
Certified Values
Arsenic ......................... 7.8 ± 0.9 mg/kg Manganese ................... 454 ± 23 mg/kg
Cadmium ...................... 5.8 ± 0.3 mg/kg Mercury......................... 4.9 ± 0.4 mg/kg
Chromium ......................... 78 ± 8 mg/kg Nickel ................................ 45 ± 3 mg/kg
Copper ......................... 354 ± 18 mg/kg Silver ................................ 55 ± 5 mg/kg
Iron ....................... 40300 ± 2300 mg/kg Vanadium ......................... 20 ± 2 mg/kg
Lead ............................... 105 ± 8 mg/kg Zinc ............................. 1100 ± 50 mg/kg
Digested sewage sludge of mixed origin was taken from a city water treatment plant
immediately after discharge from a digestion tank.
This material is intended for use in development, validation or quality control of
analytical methods for the determination of PAHs in sewage sludge.
Assessed Values
Acenaphthene ..................... 0.10 mg/kg Chrysene ............................. 0.84 mg/kg
Anthracene .......................... 0.17 mg/kg Fluoranthene........................ 1.81 mg/kg
Benzo(a)anthracene ............ 0.66 mg/kg Fluorene .............................. 0.19 mg/kg
Benzo(b)fluoranthene .......... 0.95 mg/kg Indeno(1,2,3-cd)pyrene ........ 0.58 mg/kg
Benzo(k)fluoranthene .......... 0.45 mg/kg Naphthalene ........................ 0.33 mg/kg
Benzo(ghi)perylene ............. 0.62 mg/kg Phenanthrene ...................... 1.04 mg/kg
Benzo(a)pyrene ................... 0.59 mg/kg Pyrene ................................. 1.53 mg/kg
Indicative Values
Acenaphthylene ..................... 0.2 mg/kg
Dibenzo[a,h]anthracene ......... 0.7 mg/kg
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