hazard quotient


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hazard quotient

Abbreviation: HQ
A numerical ratio used to estimate whether a toxic exposure will prove harmful to an exposed person or ecosystem. The ratio is typically expressed as the measurable toxic exposure to a screening benchmark, such as the highest concentration of the toxicant known not to cause harm. An HQ greater than 1.0 is potentially toxic. An HQ less than 1.0 is not toxic, unless the toxic exposure is to multiple substances each with its own biological or ecological risk.
See also: quotient
References in periodicals archive ?
00 * 10-15 * 15-20 bw = body weight * [micro]g/kg bw/day Table 4: Non-carcinogenic chronic daily intake and hazard quotients of toxic metals in Cucumis sativus and soil Zn Ni Pb Cd Cr Non-carcinogenic Chronic Daily Intake CDI-F 0.
TABLE 1 Hazard quotients associated with the formaldehyde emissions from Lumber Liquidators' laminate flooring made in China.
Noncancer health risk hazard quotients (HQ) for respondents with mean and 95th percentile consumption rates.
For both the direct and indirect exposures, we calculated the hazard quotients as the ratio of the calculated exposures to both cancer and non-cancer health exposure guidelines.
For both the direct and indirect exposures, we calculated the hazard quotients as the ratio of the calculated exposures to the cancer (NSRL) and non-cancer (CREL) health exposure guidelines.