Geogenic nickel exposure from food consumption and soil ingestion : A bioavailability based assessment
Copyright © 2020 Elsevier Ltd. All rights reserved..
Accumulation and oral bioavailability of nickel (Ni) were rarely assessed for staple crops grown in high geogenic Ni soils. To assess exposure risk of geogenic Ni, soil, wheat, and rice samples were collected from a naturally high background Ni area and measured for Ni oral relative bioavailability (RBA, relative to NiSO4) using a newly developed mouse urinary Ni excretion bioassay. Results showed that soils were enriched with Ni (80.5 ± 23.0 mg kg-1, n = 58), while high Ni contents were observed in rice (2.66 ± 1.46 mg kg-1) and wheat (1.32 ± 0.78 mg kg-1) grains, with rice containing ∼2-fold higher Ni content than wheat. Ni-RBA was low in soil (14.8 ± 7.79%, n = 18), but high in wheat and rice with rice Ni-RBA (85.9 ± 19.1%, n = 9) being ∼2-fold higher than wheat (46.1 ± 21.2%, n = 16). A negative correlation (r = 0.61) was observed between Ni-RBA and iron content in rice and wheat, suggesting the low iron status of rice drives its high Ni bioavailability. The higher Ni accumulation and bioavailability for rice highlights that rice consumption was a more important contributor to daily Ni intake compared to wheat, while Ni intake from direct soil ingestion was negligible. This study suggests a potential health risk of staple crops especially rice when grown in high geogenic Ni areas.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:265 |
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| Enthalten in: |
Environmental pollution (Barking, Essex : 1987) - 265(2020), Pt B vom: 15. Okt., Seite 114873 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Hong-Bo [VerfasserIn] |
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| Links: |
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| Themen: |
7OV03QG267 |
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| Anmerkungen: |
Date Completed 18.08.2020 Date Revised 18.08.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.envpol.2020.114873 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM310824699 |
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| 245 | 1 | 0 | |a Geogenic nickel exposure from food consumption and soil ingestion |b A bioavailability based assessment |
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| 520 | |a Copyright © 2020 Elsevier Ltd. All rights reserved. | ||
| 520 | |a Accumulation and oral bioavailability of nickel (Ni) were rarely assessed for staple crops grown in high geogenic Ni soils. To assess exposure risk of geogenic Ni, soil, wheat, and rice samples were collected from a naturally high background Ni area and measured for Ni oral relative bioavailability (RBA, relative to NiSO4) using a newly developed mouse urinary Ni excretion bioassay. Results showed that soils were enriched with Ni (80.5 ± 23.0 mg kg-1, n = 58), while high Ni contents were observed in rice (2.66 ± 1.46 mg kg-1) and wheat (1.32 ± 0.78 mg kg-1) grains, with rice containing ∼2-fold higher Ni content than wheat. Ni-RBA was low in soil (14.8 ± 7.79%, n = 18), but high in wheat and rice with rice Ni-RBA (85.9 ± 19.1%, n = 9) being ∼2-fold higher than wheat (46.1 ± 21.2%, n = 16). A negative correlation (r = 0.61) was observed between Ni-RBA and iron content in rice and wheat, suggesting the low iron status of rice drives its high Ni bioavailability. The higher Ni accumulation and bioavailability for rice highlights that rice consumption was a more important contributor to daily Ni intake compared to wheat, while Ni intake from direct soil ingestion was negligible. This study suggests a potential health risk of staple crops especially rice when grown in high geogenic Ni areas | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Naturally high background | |
| 650 | 4 | |a Nickel | |
| 650 | 4 | |a Oral bioavailability | |
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| 700 | 1 | |a Wang, Jue-Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Xiao-Qiang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yu-Ping |e verfasserin |4 aut | |
| 700 | 1 | |a Fan, Jian |e verfasserin |4 aut | |
| 700 | 1 | |a Ren, Jing-Hua |e verfasserin |4 aut | |
| 700 | 1 | |a Luo, Xiao-San |e verfasserin |4 aut | |
| 700 | 1 | |a Juhasz, Albert L |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Lena Q |e verfasserin |4 aut | |
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