Abstract
While iodide (I-) is critical for biological systems, it can serve as a precursor to organic iodinated disinfection byproducts (I-DBPs) of human health concern during water treatment. Thus, understanding potential I- occurrence in fresh waters is critical. Although I- occurrence data are sparse in surface water (SW) or groundwater (GW) used for drinking water supplies, data exist for other locations. We analyzed historical I- occurrence for â 9200 SW and GW sampling locations in the United States to understand potential I- sources and also spatial and temporal variability. I- ranged from below detection limits (<1 μg/L) to 95th percentile concentrations of 320 and 1300 μg/L (median = 12 and 13 μg/L), respectively, in SW and GW. I- appears to be influenced by halite basins, organic-rich shale/oil formations, saltwater intrusion, and rainfall, with median Br-/I- mass ratios of 10 and 17 μg/μg in SW and GW, respectively. Our results demonstrated considerable variability in iodine sources and speciation, which can impact I-DBP formation at WTPs. We advocate for occurrence studies to measure I-, IO3 -, and total iodine in raw and finished drinking waters to fill critical data gaps necessary to understand the potential formation of I-DBPs that impact public health.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 379-388 |
| Number of pages | 10 |
| Journal | Environmental Science and Technology Letters |
| Volume | 6 |
| Issue number | 7 |
| DOIs | |
| State | Published - May 28 2019 |
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ASJC Scopus subject areas
- Ecology
- Environmental Chemistry
- Health, Toxicology and Mutagenesis
- Pollution
- Waste Management and Disposal
- Water Science and Technology
Cite this
Historical and future needs for geospatial iodide occurrence in surface and groundwaters of the united states of america. / Sharma, Naushita; Karanfil, Tanju; Westerhoff, Paul.
In: Environmental Science and Technology Letters, Vol. 6, No. 7, 28.05.2019, p. 379-388.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Historical and future needs for geospatial iodide occurrence in surface and groundwaters of the united states of america
AU - Sharma, Naushita
AU - Karanfil, Tanju
AU - Westerhoff, Paul
PY - 2019/5/28
Y1 - 2019/5/28
N2 - While iodide (I-) is critical for biological systems, it can serve as a precursor to organic iodinated disinfection byproducts (I-DBPs) of human health concern during water treatment. Thus, understanding potential I- occurrence in fresh waters is critical. Although I- occurrence data are sparse in surface water (SW) or groundwater (GW) used for drinking water supplies, data exist for other locations. We analyzed historical I- occurrence for â 9200 SW and GW sampling locations in the United States to understand potential I- sources and also spatial and temporal variability. I- ranged from below detection limits (<1 μg/L) to 95th percentile concentrations of 320 and 1300 μg/L (median = 12 and 13 μg/L), respectively, in SW and GW. I- appears to be influenced by halite basins, organic-rich shale/oil formations, saltwater intrusion, and rainfall, with median Br-/I- mass ratios of 10 and 17 μg/μg in SW and GW, respectively. Our results demonstrated considerable variability in iodine sources and speciation, which can impact I-DBP formation at WTPs. We advocate for occurrence studies to measure I-, IO3 -, and total iodine in raw and finished drinking waters to fill critical data gaps necessary to understand the potential formation of I-DBPs that impact public health.
AB - While iodide (I-) is critical for biological systems, it can serve as a precursor to organic iodinated disinfection byproducts (I-DBPs) of human health concern during water treatment. Thus, understanding potential I- occurrence in fresh waters is critical. Although I- occurrence data are sparse in surface water (SW) or groundwater (GW) used for drinking water supplies, data exist for other locations. We analyzed historical I- occurrence for â 9200 SW and GW sampling locations in the United States to understand potential I- sources and also spatial and temporal variability. I- ranged from below detection limits (<1 μg/L) to 95th percentile concentrations of 320 and 1300 μg/L (median = 12 and 13 μg/L), respectively, in SW and GW. I- appears to be influenced by halite basins, organic-rich shale/oil formations, saltwater intrusion, and rainfall, with median Br-/I- mass ratios of 10 and 17 μg/μg in SW and GW, respectively. Our results demonstrated considerable variability in iodine sources and speciation, which can impact I-DBP formation at WTPs. We advocate for occurrence studies to measure I-, IO3 -, and total iodine in raw and finished drinking waters to fill critical data gaps necessary to understand the potential formation of I-DBPs that impact public health.
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UR - http://www.scopus.com/inward/citedby.url?scp=85069699440&partnerID=8YFLogxK
U2 - 10.1021/acs.estlett.9b00278
DO - 10.1021/acs.estlett.9b00278
M3 - Review article
VL - 6
SP - 379
EP - 388
JO - Environmental Science and Technology Letters
JF - Environmental Science and Technology Letters
SN - 2328-8930
IS - 7
ER -