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.
Laboratoire de Biochimie C, Centre Hospitalier Régional, Grenoble, France.
J
J
Arnaud
A
A
Prual
P
P
Preziosi
A
A
Favier
S
S
Hercberg
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