High impact information on Maximum Allowable Concentration

• The geometric mean (GM) of toluene concentration in the air was 52.80 ppm (10-760 ppm); 54% of the study participants were exposed to toluene concentrations that exceeded the maximum permissible exposure level (MPEL) [1].
• In aloe-based alcoholic beverages, the aloins could not be detected, owing to their instability and degradation in solution; this is discussed in relation to the EEC Council Directive 88/388, which fixed the values of maximum allowable concentrations for aloin in food and beverages [2].
• Fluoride levels in soft tissues of the snail cannot serve as an indicator for biomonitoring purposes as no significant accumulation was observed during exposure to maximum allowable concentrations of fluoride in drinking water [3].
• The maximum allowable concentration was 28.2 mmol/l, 0.068 mmol/l and 171 mmol/l for triglycerides, haemoglobin and bilirubin, respectively [4].
• The results of standardized 8 h lasting exposures of n = 18 volunteers to ethylbenzene (EthBz) at levels of 25 and 100% of the maximum allowable concentrations at the workplace (MAK) value of 100 ppm as well as the results of field studies are considered to evaluate a biological tolerance (BAT) value for EthBz [5].

Anatomical context of Maximum Allowable Concentration

• The results showed that benzene, toluene, and xylene were found in the blood and semen of some ex-workers at workplaces where the air concentration of benzene, toluene, and xylene exceeded the maximum allowable concentration (MAC) [6].

Associations of Maximum Allowable Concentration with chemical compounds

• The recommended maximum allowable concentration in the working zone for thiophosphoryl chloride in air was set at 3 mg m-3 [7].
• The present Czechoslovakian maximum allowable concentration of styrene (200 mg/m3) should be reduced, and the concentration of 50 mg/m3 may be recommended as reasonable at this time [8].
• The biological indices of exposure for mesitylene have been proposed, taking the maximum allowable concentration (MAC) value in Poland (100 mg/m3) as the basis [9].
• The highest maximum allowable concentration of Cd in rice calculated for these indicators was 0.34 ppm/l and 0.29 ppm/g creatinine [10].
• A comparison of the elemental concentrations with WHO guidelines showed that with the exception of violations of Cd, Cr and Se limits in some of the drinking water samples, the levels of all the other elements investigated were below the WHO maximum allowable concentrations [11].

Gene context of Maximum Allowable Concentration

• The pre-DCA HDPEL value was highest in group IML and lowest in group NI; however, no significant differences in MPEL/MAEL values were found [12].
• These values, which are similar to those reported previously using urinary beta 2-microglobulin as the indicator, may be of use in establishing the biological threshold, i.e. maximum allowable concentration, for urinary Cd in the environmentally exposed Japanese population [13].
• In 1995 the hygiene occupational standard values of carbon disulfide (CS2) were established in Poland: the maximum allowable concentration, eight-hour time weighted average (MAC-TWA)--18 mg/m3, and the short time exposure level (STEL)--30 mg/m3 [14].

Analytical, diagnostic and therapeutic context of Maximum Allowable Concentration

• The findings confirm results of other epidemiologic studies and underscore the necessity of reducing the maximum allowable concentration of cadmium in the atmospheric air because of excessive intake from other sources [15].
• Mean air chlorfenvinphos concentrations in the work environment estimated with gas-liquid chromatography were from 0.0008-0.0018 mg/m3 (maximum allowable concentration according to Polish standards is 0. 01 mg/m3) [16].

References