1979
DOI: 10.1203/00006450-197909000-00001
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The Zinc, Copper, Manganese, Vanadium, and Iodine Content of Hair from 38 Canadian Neonates

Abstract: SummaryThe purpose of this investigation was to establish normal values Instrumental neutron activation analysis was used to establish "normal values" for the zinc, copper, manganese, vanadium, and iodine concentrations in washed hair samples from Canadian neonates. Sixteen males and 22 females (mean gestation of 40 wk; mean birthweight 3590 g) were included in the study. Their respective mean concentrations f SE (parts per million) were 224.0 f 6.29; 12.6 f 0.61; 0.24 f 0.04, 0.05 f 0.01; 24.3 f 4.76. AU the … Show more

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Cited by 39 publications
(8 citation statements)
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“…Maternal hair samples for Zn analysis were obtained from the occipital region of the scalp using stainless steel scissors at 23.7 and 32.9 weeks gestation; only the proximal 10-15mm of the hair strands were used for analysis. Hair samples were checked for nits and lice before washing with a non-ionic detergent (Actinox) using a standard procedure (Gibson & DeWolfe, 1979). After drying the washed hair samples, they were packaged in sealed polyethylene bags, and later analysed by instrumental neutron activation.…”
Section: Biochemical Assessmentmentioning
confidence: 99%
“…Maternal hair samples for Zn analysis were obtained from the occipital region of the scalp using stainless steel scissors at 23.7 and 32.9 weeks gestation; only the proximal 10-15mm of the hair strands were used for analysis. Hair samples were checked for nits and lice before washing with a non-ionic detergent (Actinox) using a standard procedure (Gibson & DeWolfe, 1979). After drying the washed hair samples, they were packaged in sealed polyethylene bags, and later analysed by instrumental neutron activation.…”
Section: Biochemical Assessmentmentioning
confidence: 99%
“…Prior to analysis by instrumental neutron activa tion, hair samples were washed with a non-ionic detergent (Actinox) using a standardized procedure described else where [17]. Accuracy and precision of the instrumental neutron activation analysis were determined by a pooled powdered hair sample and 10 hair samples previously analyzed with an Atomic Energy Authority (AEA, Vienna) certified pow dered hair sample.…”
Section: Biochemical Assessmentmentioning
confidence: 99%
“…The zinc content of the hair shaft reflects the quantity of zinc that was available to the hair follicle during an earlier time interval, so hair zinc concentration has been proposed as a useful index of longer-term zinc status. During infancy and early childhood, hair zinc concentration declines from high neonatal values, reaching a minimum at about 2-3 years [83,84]. These trends in hair zinc concentrations may arise from a gradual depletion of tissue zinc pools induced by rapid growth.…”
Section: Hair Zinc Concentrationmentioning
confidence: 99%
“…A non-ionic detergent (e.g., Actinox) with [102] or without acetone [103] can be used. Hair samples can be analyzed by instrumental neutron activation (INA) [83] or flame atomic absorption spectrophotometry [103]. Accuracy of the analytic methods can be assessed using a certified reference material for human hair (e.g., Community Bureau of Reference, Certified Reference Material #397; Institute for Reference Materials and Measurements, Retieseweg., B-2440 Geel, Belgium).…”
Section: Hair Zinc Concentrationmentioning
confidence: 99%