Erratum to: Variability of olfactory threshold and its role in assessment of aging

Stevens, Joseph C.; Dadarwala, A. D.

doi:10.3758/bf03211778

Cited by 2 publications

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“…The odor threshold concentration (OTC, the odorant concentration that 50% of the population can smell) is influenced by many factors, including genetics, , age, , gender, , odor memory or prior exposure experiences, ,− regional water quality, and methodology to determine the odor threshold . For a specific odorant, individual OTC can even vary by more than 100-fold . Thus, odor threshold of human population is best described by a range rather than a single value .…”

Section: Introductionmentioning

confidence: 99%

“…28 For a specific odorant, individual OTC can even vary by more than 100-fold. 29 Thus, odor threshold of human population is best described by a range rather than a single value. 25 Besides, the tolerance and preference for the same odor might vary for different consumers as has been shown for consumer preferences related to the taste of chlorine in drinking water.…”

Section: Introductionmentioning

confidence: 99%

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Risk Assessment for 2-MIB Odor Complaint in Drinking Water Based on Zero-Inflated Log-Normal Model

Wang,

An,

Zhao

et al. 2023

ACS EST Water

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Based on the most often encountered odor problem caused by 2-methylisoborneol (2-MIB), a quantitative method was developed to determine odor complaint risk by combining odorant concentration probability distribution with complaint threshold distribution, followed by a probabilistic approach. Zero-inflated model was used for handling seasonal 2-MIB concentrations with excess left-censored values for warm and cold seasons by adopting maximum likelihood methods. Complaint threshold values, defined as guidance level of a specific odorant to avoid sensitive population complaints, were fitted with a log-normal distribution. 0.6% complaint threshold values were less than the drinking water quality standard of 10 ng/L of China, illustrating that lowering 2-MIB to below 10 ng/L could effectively protect residents from 2-MIB odor nuisance. As expected, 2-MIB in warm seasons showed a higher mean complaint risk (6.35%) compared with cold seasons (2.88%). 85% of 2-MIB concentrations in warm seasons and 90% in cold seasons would have no complaint risk. Using the developed method, 2-MIB complaint risks in drinking water in five cities were determined. This is the first attempt to assess odor complaint risk in drinking water, which will provide risk managers a new insight on the nonhazard effect of pollutants to further establish water quality standards by constraint of complaint risk.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Risk Assessment for 2-MIB Odor Complaint in Drinking Water Based on Zero-Inflated Log-Normal Model

Wang,

An,

Zhao

et al. 2023

ACS EST Water

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Tale of Two Isomers: Complexities of Human Odor Perception forcis- andtrans-4-Methylcyclohexane Methanol from the Chemical Spill in West Virginia

Gallagher

Phetxumphou

Smiley

et al. 2015

Environ. Sci. Technol.

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Application of gas chromatography with mass spectrometric and human olfactory "sniffer" detectors reveals the nature of odorous chemicals from an industrial chemical spill. Crude 4-methylcyclohexane methanol (4-MCHM) spilled in a river and then contaminated drinking water and air for over 300000 consumers living in West Virginia. Olfactory gas chromatography allows investigators to independently measure the odor of chemical components in a mixture. Crude 4-MCHM is comprised of several major cyclohexane components, four of which have distinct isomer pairs. The cis- and trans-4-MCHM isomers are the only components to have distinct odors at the concentrations used in this study. The trans-4-MCHM is the dominant odorant with descriptors of "licorice" and "sweet". Trans-4-MCHM has an air odor threshold concentration of 0.060 ppb-v (95% CI: 0.040-0.091). The odor threshold concentrations are not influenced by gender or age but are lower by a factor of 5 for individuals with prior exposure compared to naïve subjects. Individual trans-4-MCHM odor threshold concentrations vary by more than a factor of 100. The cis-4-MCHM isomer has approximately a 2000-fold higher odor threshold concentration, different descriptors, and an even wider individual response range.

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Erratum to: Variability of olfactory threshold and its role in assessment of aging

Cited by 2 publications

References 0 publications

Risk Assessment for 2-MIB Odor Complaint in Drinking Water Based on Zero-Inflated Log-Normal Model

Risk Assessment for 2-MIB Odor Complaint in Drinking Water Based on Zero-Inflated Log-Normal Model

Tale of Two Isomers: Complexities of Human Odor Perception forcis- andtrans-4-Methylcyclohexane Methanol from the Chemical Spill in West Virginia

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