Selenium determination in human milk in Niger: influence of maternal status.
Selenium (Se) was determined in human milk from women residing in Niamey (Niger) at different periods of lactation. To this purpose, a rapid electrothermal atomic absorption spectrometric (EAAS) method using Zeeman background correction and palladium matrix modifier was developed. Linear range (10 nmol/L-6.25 mumol/L, 0.8-494 micrograms/L), within-run (7.6%), between-run (10.4%), precision and recovery of standard addition (101 +/- 7%) were sufficient to allow routine determination of Se in breast milk. Values of breast milk Se decreased from 5 days to 6 months postpartum. No significant correlation was found between the milk Se and any of the following parameters: mother serum Se, parity, age of the mother, age of the previous child. In mother serum, Se concentration increased from delivery to 3 months postpartum and remained stable afterwards. The Se concentrations found in breast milk and in mother serum suggest that Se status is adequate in Niger.
Arnaud
J
J
Laboratoire de Biochimie C, Centre Hospitalier Régional, Grenoble, France.
Prual
A
A
Preziosi
P
P
Favier
A
A
Hercberg
S
S
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007774:Lactation; D008423:Maternal Age; D008875:Middle Aged; D008895:Milk, Human / Q000737:chemistry*; D009548:Niger; D010298:Parity; D011247:Pregnancy; D015203:Reproducibility of Results; D012643:Selenium / Q000032:analysis* / Q000097:blood; D013054:Spectrophotometry, Atomic
D012643:Selenium