The organic solvent extraction efficiency of activated carbon used in sampling tube products

Abiko, Hironobu

doi:10.7209/tanso.2015.201

Cited by 10 publications

(13 citation statements)

References 10 publications

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“…The adsorbents in these samplers are petroleum based. According to an earlier study (Abiko 2015 ), petroleum-based activated carbons tend to show better recovery rates than coconut shell-based activated carbons. This tendency is in good agreement with our results.…”

Section: Resultsmentioning

confidence: 99%

“…According to their results, the Anasorb CSC coconut charcoal sampler in combination with hexane provided adequate sensitivity, good linearity, and a fast and easy protocol for monitoring trace carbon disulfide in air. Abiko ( 2015 ) compared the recovery rates of six VOCs (toluene, 1-butanol, acetone, cyclohexanone, ethylene glycol monoethyl ether, and butyl acetate) using eight commercial active samplers to investigate what parameters could directly influence the accuracy of determination. The investigator used activated carbons prepared from coconut shell and petroleum and found that the average particle diameter and the precursor material used to prepare the adsorbent affected the recovery rate.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the volatile organic compound recovery rates of commercial active samplers for evaluation of indoor air quality in work environments

Miyake

Tokumura

Wang

et al. 2017

Air Qual Atmos Health

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The Industrial Safety and Health Law in Japan established administrative levels for volatile organic compounds (VOCs) in indoor air. In the present study, these 49 VOCs were extracted from the absorbents of commercial active samplers from Sibata Scientific Technology (carbon-bead active sampler), SKC Inc. (Anasorb CSC sorbent tube), and Gastec (bead-shaped activated carbon tube) using carbon disulfide, and the recovery rates were compared. The VOCs were added to the adsorbents at three concentration levels relative to the administrative levels (×0.5, ×1, and ×2). The following mean recovery rates of the 49 VOCs were obtained at the ×0.5, ×1, and ×2 levels: 86, 93, and 92% for the Sibata sampler; 78, 82, and 84% for the SKC sampler; and 94, 93, and 90% for the Gastec sampler. With the Sibata sampler, the recovery rates of 78% (×0.5), 84% (×1), and 90% (×2) of the VOCs measured in this study were adequate (80–120%); the corresponding percentages for the SKC sampler were 67% (×0.5), 69% (×1), and 69% (×2), and those for the Gastec sampler were 92% (×0.5), 86% (×1), and 86% (×2). The effects of the octanol–water partition coefficients and vapor pressures of the VOCs on the recovery rates were investigated. The recovery rates increased with increases in the octanol–water partition coefficient and the vapor pressure and then leveled off. The recovery rates for the o-, m-, and p-cresol isomers were much lower than those obtained for other VOCs at all three concentration levels and with all samplers.Electronic supplementary materialThe online version of this article (doi:10.1007/s11869-017-0465-0) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of the volatile organic compound recovery rates of commercial active samplers for evaluation of indoor air quality in work environments

Miyake

Tokumura

Wang

et al. 2017

Air Qual Atmos Health

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“…The N 2 BET specific surface areas of the silica gel specimens are ranged from 525 to 746 m 2 /g. These values were clearly lower than those of activated carbon used in Japanese sampling tube products 13) (approximately 9701430 m 2 /g). The values were also restricted in distribution as compared with those of activated carbon.…”

Section: Jcs-japanmentioning

confidence: 61%

“…The tendency of adsorbents is opposite of that of activated carbon adsorbents. 13), 14) The activated carbon specimens in the previous experiments were microporous carbon materials, Abiko: Silica gel adsorbents for sampling tube in work environment measurements and their extraction efficiency of alcohols and excess pore development in the adsorbents seems to decrease extraction of the organic solvent components from micropores. In contrast, silica gel specimens in this study are mesoporous materials, and pore development in mesoporous regions contributes to the increase of specific surface area.…”

Section: )mentioning

confidence: 99%

Silica gel adsorbents for sampling tube in work environment measurements and their extraction efficiency of alcohols

Abiko

2017

J. Ceram. Soc. Japan

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“…This method for measuring the organic vapor concentration in air using solvent extraction is called "the solid collection method." Conventional activated carbon and silica gel SiO 2 ⋅ nH 2 O adsorbents are typical sampling agents used in sampling tube products [10][11][12][13][14][15][16][17][18][19][20][21][22] for this method. In the current market, other materials for preconcentration are expensive and not effective in work environment measurements compared with these two types of adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Extraction efficiency of alcohols from activated carbon and silica gel sampling agents in the low concentration region

Abiko

2021

SN Appl. Sci.

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Activated carbon and silica gel adsorbents are commonly used as sampling agents in small glass tube products for work environment measurements of organic solvent vapor in air. In the measurements, extraction efficiency of organic solvent components from sampling agents is very important for accuracy of the determination. We have investigated the effect of two representative efficiency determination methods as established by the Industrial Safety and Health Act in Japan: the direct addition and phase equilibrium methods, using both of these adsorbent materials found in typical recent sampling tube products in Japan and four types of alcohol. The results indicate that the phase equilibrium method has a tendency to show slightly higher values compared with the direct addition method for each adsorbent. In addition, compared with silica gel, petroleum-based activated carbon can be a preferable sampling agent of alcohols in the extremely low concentration region, below approximately 10 ppm.

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The organic solvent extraction efficiency of activated carbon used in sampling tube products

Cited by 10 publications

References 10 publications

Comparison of the volatile organic compound recovery rates of commercial active samplers for evaluation of indoor air quality in work environments

Comparison of the volatile organic compound recovery rates of commercial active samplers for evaluation of indoor air quality in work environments

Silica gel adsorbents for sampling tube in work environment measurements and their extraction efficiency of alcohols

Extraction efficiency of alcohols from activated carbon and silica gel sampling agents in the low concentration region

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