Radioisotopic studies concerning the efficacy of standard washing procedures for the cleansing of hair before zinc analysis

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Am. J. Clin. Nutr.; (United States)

OSTI ID:5997886

Buckley, R A; Dreosti, I E

Various standard procedures were investigated in relation to the removal of exogenously applied 65Zn from human hair and endogenously incorporated 65Zn from rat hair. Human hair was found to adsorb zinc and a variety of other metal ions from aqueous solutions in a manner which suggested some ion-exchange capacity. Uptake of zinc varied considerably between human hair samples, but in most cases accumulation of zinc occurred rapidly and often resulted in hair zinc levels several-fold higher than found in control samples. Extraction of zinc and other metal ions was greatest after treatment with disodium EDTA and sodium lauryl sulfate than after washing with water or aqueous Triton X-100. However, no procedure effectively removed all exogenous zinc, while all treatments extracted varying proportions of the endogenous zinc component. Because of the inability of standard washing procedures to remove exogenous zinc without reducing endogenous or indicator zinc levels, use of hair zinc analyses to indicate nutritional zinc status are inadvisable if hair zinc contamination is likely to have occurred.

• Research Organization: CSIRO, Adelaide, South Australia
• OSTI ID: 5997886
• Journal Information: Am. J. Clin. Nutr.; (United States), Journal Name: Am. J. Clin. Nutr.; (United States) Vol. 40:4; ISSN AJCNA
• Country of Publication: United States
• Language: English

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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METAL COMPOUNDS
AMINO ACIDS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BODY
CADMIUM
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMICAL ANALYSIS
CLEANING
COPPER
DAYS LIVING RADIOISOTOPES
DECONTAMINATION
EDTA
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ESTERS
EVEN-ODD NUCLEI
HAIR
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
MAMMALS
MAN
METALS
NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
PRIMATES
RADIOISOTOPES
RATS
REMOVAL
RODENTS
SKIN
SODIUM COMPOUNDS
SULFURIC ACID ESTERS
TRACER TECHNIQUES
TRANSITION ELEMENTS
UPTAKE
VERTEBRATES
WASHING
ZINC 65
ZINC ISOTOPES