Difference between revisions of "Infant's dioxin exposure"
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* Updated 30.5.2017 [http://en.opasnet.org/en-opwiki/index.php?title=Special:RTools&id=L6vVc0qwbJbTFkVF] | * Updated 30.5.2017 [http://en.opasnet.org/en-opwiki/index.php?title=Special:RTools&id=L6vVc0qwbJbTFkVF] | ||
− | <rcode name="initiate"> | + | <rcode name="initiate" label="Initiate ovariables (for developers only)"> |
# This is code Op_en7797/initiate on page [[Infant's dioxin exposure]] | # This is code Op_en7797/initiate on page [[Infant's dioxin exposure]] | ||
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out <- expoRaw * f_ing * t0.5 / log(2) # Body burden in mother after long constant exposure | out <- expoRaw * f_ing * t0.5 / log(2) # Body burden in mother after long constant exposure | ||
out <- out * f_mtoc / BF # Dioxin concentration in child | out <- out * f_mtoc / BF # Dioxin concentration in child | ||
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# Technical conversion | # Technical conversion |
Latest revision as of 12:14, 1 June 2017
This page is a method.
The page identifier is Op_en7797 |
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Question
How to measure infant's dioxin exposure due to fetal period and breast feeding?
Answer
Mother's exposure at level 100 pg /d (fairly typical amount) will lead to child's TEQ concentration of 44 pg /g fat (logTEQ 3.8).
Rationale
Inputs
Obs | Parametre | Value | Description |
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1 | TEQ half-life | 2737.5 | t0.5: 7.5 * 365, Dioxin half-life in adults (d) |
2 | TEQ fraction absorbed | 0.8 | f_ing: 0.80, Fraction of dioxin ingested that is actually absorbed (-) |
3 | TEQ fraction to child | 0.1 - 0.25 | f_mtoc: 0.25, Fraction of mother's dioxin burden that enters the child during breast-feeding in 6 mo. Alaluusua et Vartiainen (-) |
4 | Body fat in infant | 1580 | BF: 0.2 * (7.692+8.141) / 2, body fat amount in the infant at six months of age (g) [[:op_en:Body weight of 0-24 months old Finnish children]]. |