Showering in Flint, MI: Is there a DBP problem?

Allen, Jessica; Cuthbertson, Amy A.; Liberatore, Hannah K.; Kimura, Susana Y.; Mantha, Anurag; Edwards, Marc; Richardson, Susan D.

doi:10.1016/j.jes.2017.06.009

Cited by 44 publications

(26 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Typical metal concentration in freshwater and seawater are around or lower than CMC value and polluted systems can reach 0.38–12 mg L −1 . 8,35,36 Given this condition, PVP–Fe 3 O 4 NPs could potentially control existing pollution effectively and be used to polish relatively clean waters in a cost effective manner. Addition of more NPs could make them suitable for remediation of more polluted waters, but the cost implications would need to be evaluated on a site-specific basis.…”

Section: Resultsmentioning

confidence: 99%

“…7 Recently, lead contamination (Pb level was 13–800 times higher than the EPA's MCL) in the City of Flint, MI caused serious environmental health issues. 8 For soil exposure, our previous work has suggested that MCLs are not sufficiently protective for lead level in soil. 9 We found a threshold value for low birth weight is about 130.5 mg kg −1 Pb in soil, which is lower than the EPA's hazardous value of 400 mg kg −1 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metal (Cd, Cr, Ni, Pb) removal from environmentally relevant waters using polyvinylpyrrolidone-coated magnetite nanoparticles

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal (Cd, Cr, Ni, Pb) removal from environmentally relevant waters using polyvinylpyrrolidone-coated magnetite nanoparticles

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Sixty DBPs were measured, including 4 HALs, 7 HANs, 9 HKs, 4 HNMs, 4 THMs, 6 I-THMs, 9 HAAs, 4 IAAs, and 13 HAMs (Table S1). Extraction and derivatization methods were adapted from previously published methods from our laboratory. − In brief, 100 mL of water or brewed tea was pH adjusted to a pH < 1 using concentrated H 2 SO 4 . Then, 30 g of sodium sulfate and 10 mL of MTBE (for the first extraction) were added to 125 mL amber bottle and the samples were shaken for 15 min.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…Diazomethane derivatization was used for the analysis of HAAs and IAAs. Diazomethane was freshly generated according to a US EPA Standard Operating Procedure. − An Aldrich diazomethane generator apparatus (St. Louis, MO) was used. In brief, approximately 0.367 g of Diazald and 1.0 mL of CARBITOL (Sigma-Aldrich, St. Louis, MO) were added to the inner piece of the generator, and 3.0 mL of MTBE were added to the outer piece.…”

Section: Materials and Methodsmentioning

confidence: 99%

Are Disinfection Byproducts (DBPs) Formed in My Cup of Tea? Regulated, Priority, and Unknown DBPs

Aziz

Granger

et al. 2021

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Globally, tea is the second most consumed nonalcoholic beverage next to drinking water and is an important pathway of disinfection byproduct (DBP) exposure. When boiled tap water is used to brew tea, residual chlorine can produce DBPs by the reaction of chlorine with tea compounds. In this study, 60 regulated and priority DBPs were measured in Twinings green tea, Earl Grey tea, and Lipton tea that was brewed using tap water or simulated tap water (nanopure water with chlorine). In many cases, measured DBP levels in tea were lower than in the tap water itself due to volatilization and sorption onto tea leaves. DBPs formed by the reaction of residual chlorine with tea precursors contributed ∼12% of total DBPs in real tap water brewed tea, with the remaining 88% introduced by the tap water itself. Of that 12%, dichloroacetic acid, trichloroacetic acid, and chloroform were the only contributing DBPs. Total organic halogen in tea nearly doubled relative to tap water, with 96% of the halogenated DBPs unknown. Much of this unknown total organic halogen (TOX) may be high-molecular-weight haloaromatic compounds, formed by the reaction of chlorine with polyphenols present in tea leaves. The identification of 15 haloaromatic DBPs using gas chromatography− high-resolution mass spectrometry indicates that this may be the case. Further studies on the identity and formation of these aromatic DBPs should be conducted since haloaromatic DBPs can have significant toxicity.

show abstract

“…Among them, iodoacetic acid (IAA) is known to be the most genotoxic in I-DBPs . Currently, IAA has been identified in drinking water in the United States, Canada, and China, with a concentration of up to 2.18 μg/L. − Notably, an in vitro tumorigenic transformation test of NIH3T3 cells has demonstrated that IAA also has strong potential carcinogenicity and could induce the malignant transformation of cells . However, the reproductive and developmental toxicity of IAA is still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Androgenic and Teratogenic Effects of Iodoacetic Acid Drinking Water Disinfection Byproduct in Vitro and in Vivo

Long

Sha

Yan

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

Iodoacetic acid (IAA) is the most genotoxic iodinated disinfection byproduct known in drinking water. Previous studies have shown that IAA may be an endocrine disruptor. However, whether IAA has reproductive and developmental toxicity remains unclear. In this study, the reproductive and developmental toxicity of IAA was evaluated using a battery of in vitro and in vivo reproductive/developmental toxicity screening tests. The results of E-Screen, uterotrophic, and H295R steroidogenesis assays were negative. The Hershberger bioassay revealed that IAA could induce significant increases in absolute and relative weights of paired Cowper’s glands. Moreover, there was an increasing trend in the relative weights of the ventral prostate. The micromass test showed that IAA could inhibit the differentiation of midbrain and limb bud cells. A reproductive/developmental toxicity screening test showed that IAA resulted in significantly increased relative weights of testis and seminal vesicles plus coagulating glands in parental male rats, with a dose–response relationship. IAA could not only induce head congestion in offspring but also decrease litter weight, viability index, and anogenital distance index of male pups on postnatal day 4. All these results indicated that IAA had reproductive and developmental toxicity.

show abstract

Showering in Flint, MI: Is there a DBP problem?

Cited by 44 publications

References 16 publications

Metal (Cd, Cr, Ni, Pb) removal from environmentally relevant waters using polyvinylpyrrolidone-coated magnetite nanoparticles

Metal (Cd, Cr, Ni, Pb) removal from environmentally relevant waters using polyvinylpyrrolidone-coated magnetite nanoparticles

Are Disinfection Byproducts (DBPs) Formed in My Cup of Tea? Regulated, Priority, and Unknown DBPs

Androgenic and Teratogenic Effects of Iodoacetic Acid Drinking Water Disinfection Byproduct in Vitro and in Vivo

Contact Info

Product

Resources

About