Organic, Animal Products

IAEA-085, Human Hair

Unit Size: 5 g
Price per Unit: 130 €
Date of Release: 1997-11-01
Reference-Sheet (pdf-format)

The materials have been prepared from human hair which was donated to the Agency. IAEA-085 represents hair with an elevated level of methylmercury (achieved by spiking the sample with methylmercury) whilst IAEA-086 is representative of the endogenous level for this analyte. The hair was cryogenically homogenized using the stainless steel “CryoPalla” mill at the KFA-Juelich Specimen Bank facility. The hair was subjected to consecutive millings, until approximately 70% had a particle size below 71 µm. These materials have been γ-sterilised to ensure long-term stability of the material by inhibiting microbial action.

Analyte	Value	Unit	95% C.I.	N	R/I/C
Ca	929	mg/kg	847 – 1010	12	I
Cu	16.8	mg/kg	15.7 – 17.8	16	I
Fe	79.3	mg/kg	71.0 – 87.8	16	R
Hg	23.2	mg/kg	22.4 – 24.0	67	R
MeHg	22.9*	mg/kg	21.9 – 23.9	5	R
Mg	140	mg/kg	127 – 153	12	I
Mn	8.8	mg/kg	8.4 – 9.2	16	I
Sc	0.0092	mg/kg	0.0084 – 0.0100	9	I
Se	1.07	mg/kg	0.96 – 1.17	13	I
Zn	163	mg/kg	156 – 170	24	R

(Value) Concentration calculated as a mean of the accepted laboratory means
(N) Number od accepted laboratory mean which are used to calculate the recommended or information values and their respective confidence intervals
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
(*) As inorganic Hg

The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in an international intercomparison exercise organized by the Section of Nutritional and HealthRelated Environmental Studies. The details concerning the criteria for qualification as a recommended or information value will be stated in the report which will be completed by the end of 2000. Orders for these materials should be sent to AQCS, Seibersdorf.