Perfluoroalkyl substances in polar bear mother-cub pairs: A comparative study based on plasma levels from 1998 and 2008: Supplemental material
Bytingsvik, J; van Leeuwen, SP; Hamers, T; Swart, K; Aars, J; Lie, E; Nilsen, EM; Wiig, O; Derocher, AE; Jenssen, BM
HERO ID
10476121
Reference Type
Journal Article
Subtype
Supplemental Data
Year
2012
Language
English
| HERO ID | 10476121 |
|---|---|
| Material Type | Supplemental Data |
| In Press | No |
| Year | 2012 |
| Title | Perfluoroalkyl substances in polar bear mother-cub pairs: A comparative study based on plasma levels from 1998 and 2008: Supplemental material |
| Authors | Bytingsvik, J; van Leeuwen, SP; Hamers, T; Swart, K; Aars, J; Lie, E; Nilsen, EM; Wiig, O; Derocher, AE; Jenssen, BM |
| Journal | Environment International |
| Volume | 49 |
| Abstract | Table A.1. Number of mothers and cubs sampled and analysed for PFASs, and litter size presented by the polar bears identification number (ID). Sex of cubs is given as F = female and M = male. Table A.2. Mean (Median) ± standard error of mean (SEM) of capture location as latitude and longitude, capture day (1–365), age (years for mothers and months for cubs), and morphometric variables (i.e. plasma lipid percentage [PL%], head length [HL, mm] zygomatic width [ZW, mm], straight length [SL, cm], axillary girth [AG, cm], body mass [BM] and body condition index [BCI]) of polar bear mothers and cubs sampled in Svalbard (Norway) in 1998 and 2008. Table A.3. PFAS nomenclature, acronyms, structure formula, and number of fluorinated carbons. Table A.4. Mean (Median) ± standard error of mean (SEM) of plasma concentrations of PFASs (ng/g ww) and percentage of total number of samples with concentrations above the limit of detection (% > LOD) in polar bear mothers sampled in Svalbard (Norway) in 1998 (n = 12) and 2008 (n = 9). Table A.5. Mean (Median) ± standard error of mean (SEM) of plasma concentrations of PFASs (ng/g ww) and percentage of total number of samples with concentrations above the limit of detection (% > LOD) in polar bear cubs sampled in Svalbard (Norway) in 1998 (n = 12) and 2008 (n = 9). Table A.6. Variables explaining PFAS-variables (ng/g ww) in plasma of polar bear mothers sampled in Svalbard (Norway) in 1998 (n = 12) and 2008 (n = 9). Significant results are presented as parameter estimates from the linear models (β and standard error (SE) of β), p-values, R2, and degrees of freedom (df). Regression analyses were done with backward selection and on the sampling years separately. Dependent variables: PFHpA to PFTrDA, PFHxS, PFOS, Σ7PFCAs and Σ2PFSAs. Independent variables included in the initial model: latitude, longitude, capture day, age, plasma lipid percentage (PL%) and body condition index (BCI). Table A.7. Variables explaining PFAS-variables (ng/g ww) in plasma of polar bear cubs-of-the-year sampled in Svalbard (Norway) in 1998 (n = 12) and 2008 (n = 9). Significant results are presented as parameter estimates from the linear models (β and standard error (SE) of β), p-values, R2, and degrees of freedom (df). Regression analyses were done with backward selection and on the sampling years separately. Dependent variables: PFHpA to PFTrDA, PFHxS, PFOS, Σ7PFCAs and Σ2PFSAs. Independent variables included in the initial model: capture day, the cubs plasma lipid percentage (PL%Cubs) and body mass (BMCubs), the mothers age (ageMothers), PL%Mothers, and body condition index (BCIMothers) and the corresponding PFAS-variable in mothers. |
| Url | https://www.sciencedirect.com/science/article/pii/S016041201200178X?via%3Dihub#ec0005 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Arctic; PFCs; temporal changes; maternal transfer; newborns; health risk |
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