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Statements

Subject Item
n2:RIV%2F60461373%3A22320%2F12%3A43893292%21RIV13-MSM-22320___
rdf:type
n12:Vysledek skos:Concept
dcterms:description
Volatile organic compounds (VOC) occur in traces in atmosphere and even in trace levels, these compounds pose serious health hazard. Sample stability, recovery, effect of temperature and moisture management are a few critical points taken into consideration while sampling and analysis of polar and non polar VOCs. In the presnet work, stability study was carried out for polar and non polar VOCs in SUMMA stainless steel canister. Compounds recoveries were assended in dry and humid canisters. Canister samples were prepared with 0,25,50 and 100 % humidity. Moreover, the study with each humidity level was performed with two different concentrations (approx 50 &500 qgm3) of each compound to evaluate the influence of lower/higher concetration. Before starting experiment, various parametres used for the measurement of VOCs from canister system were optimized and method detection limit was calculated as the accuracy of analytical measurement is the key part of stability study. Polar compounds like alcohols were poorly recovered from dry canisters. Sulphur and chloro compounds were recovered in the rande of 12-68% over one month period. Aromatic and aliphatic hydrocarbons appeared to be unaffected. In presence of humidity in canister, alcohols showed better recovery but recovery was sometime irregular especially if they are in low concentration. Recovery of suplfur compounds improved significantly in presence of humidity while chloro compounds were recovered about 60-70% even if humidity is there. Overall, humidity is proved to be essential for the recovery of alcohols, sulfur and chloro compounds and 50% humidity was the best suitable humidity. Nonpolar compounds remained unaffected irrespective of humidity level. Volatile organic compounds (VOC) occur in traces in atmosphere and even in trace levels, these compounds pose serious health hazard. Sample stability, recovery, effect of temperature and moisture management are a few critical points taken into consideration while sampling and analysis of polar and non polar VOCs. In the presnet work, stability study was carried out for polar and non polar VOCs in SUMMA stainless steel canister. Compounds recoveries were assended in dry and humid canisters. Canister samples were prepared with 0,25,50 and 100 % humidity. Moreover, the study with each humidity level was performed with two different concentrations (approx 50 &500 qgm3) of each compound to evaluate the influence of lower/higher concetration. Before starting experiment, various parametres used for the measurement of VOCs from canister system were optimized and method detection limit was calculated as the accuracy of analytical measurement is the key part of stability study. Polar compounds like alcohols were poorly recovered from dry canisters. Sulphur and chloro compounds were recovered in the rande of 12-68% over one month period. Aromatic and aliphatic hydrocarbons appeared to be unaffected. In presence of humidity in canister, alcohols showed better recovery but recovery was sometime irregular especially if they are in low concentration. Recovery of suplfur compounds improved significantly in presence of humidity while chloro compounds were recovered about 60-70% even if humidity is there. Overall, humidity is proved to be essential for the recovery of alcohols, sulfur and chloro compounds and 50% humidity was the best suitable humidity. Nonpolar compounds remained unaffected irrespective of humidity level.
dcterms:title
Evaluation of stability of volatile organic compounds in SUMMA canisters at different humidity levels Evaluation of stability of volatile organic compounds in SUMMA canisters at different humidity levels
skos:prefLabel
Evaluation of stability of volatile organic compounds in SUMMA canisters at different humidity levels Evaluation of stability of volatile organic compounds in SUMMA canisters at different humidity levels
skos:notation
RIV/60461373:22320/12:43893292!RIV13-MSM-22320___
n12:predkladatel
n13:orjk%3A22320
n3:aktivita
n18:I
n3:aktivity
I
n3:cisloPeriodika
1
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n11:9595775
n3:druhVysledku
n17:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
135185
n3:idVysledku
RIV/60461373:22320/12:43893292
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Sample Stability; mass Spectrometry; Gas Chromatography; Canister; VOCs
n3:klicoveSlovo
n10:VOCs n10:Sample%20Stability n10:Gas%20Chromatography n10:Canister n10:mass%20Spectrometry
n3:kodStatuVydavatele
IN - Indická republika
n3:kontrolniKodProRIV
[29E628F87332]
n3:nazevZdroje
Research in Enviroment and Life Sciences
n3:obor
n14:DI
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
5
n3:tvurceVysledku
Kumar, Anuj Víden, Ivan
s:issn
0974-4908
s:numberOfPages
8
n9:organizacniJednotka
22320