Themeasurementof1,3-BDfromambientan

Themeasurementof1,3-BDfromambientandindoorairhas beenproblematicmainlybecauseofquestionsregardingsampling andsamplestorage(Kimetal.,1999).1,3-BDhasbeencollected fromairusingpassiveoractivesamplersbasedonmolecularsieve adsorbent.Airhumidityweakensthesamplingefficiencyof molecularsieve,whichalsopossessespoorstoragestability (Martinetal.,2005).Samplersbasedoncarbon(carbonmolecular sieve,Carboxen569,Carboxen1003andCarbosieveSIII)alsohave poorstoragestability.Astorageof24hdecreasedtherecoveryof 1,3-BDo57%fortheabovesamplers.Conversely,therecoveryof over95%fromCarbotrapX(¼CarbopackX)hasbeenreportedfor 1,3-BDafter168hstorage(Dettmeretal.,2000).Thus,Carbopack Xhasbeensuccessfullyappliedforthesamplingof1,3-BDfrom urbanair(Modigetal.,2004)andthesamplescouldbestoredina refrigeratoroveramonth(Martinetal.,2005;Strandbergetal., 2005). TheseobservationsregardingCarbopackXcouldbeverifiedin ourstudy;therecoveryof1,3-BDwasgoodafterstorageofseveral weeks.Ourstudyalsoconfirmedthesamplingefficiencyof CarbopackXfor1,3-BDandisopreneatsamplevolumeofp20l. Thisvolumecorrespondstothesafevolumep82l/greportedby Martinetal.(2005). Inpreviousstudies,theCarbopackXcalibrationsampleshave beenpreparedusinggasstandards(Martinetal.,2005;Strandbergetal.,2005).Usinggasstandardsindailyworkis,however, laborious,andwe,therefore,preparedthecalibrationsamplesby spikingthetubeswithcalibrationsolution.Therepeatabilityof thespiked1,3-BDcalibrationsamplespreparedinCarbopackX tubeswas,however,poor.CarbopackBwas,therefore,usedfor calibrationandthevalidityofthecalibrationwascheckedusing gasstandardsingasbags.

ผลลัพธ์ (ไทย) 1:

Themeasurementof1, 3 BDfromambientandindoorairhas beenproblematicmainlybecauseofquestionsregardingsampling andsamplestorage (Kimetal. 1999) adsorbent fromairusingpassiveoractivesamplersbasedonmolecularsieve .1,3-BDhasbeencollectedMolecularsieve Airhumidityweakensthesamplingefficiencyof, whichalsopossessespoorstoragestability (Martinetal. 2005)Samplersbasedoncarbon (carbonmolecular ตะแกรง Carboxen569, Carboxen1003andCarbosieveSIII) alsohave poorstoragestabilityAstorageof24hdecreasedtherecoveryof 1,3-BDo57% fortheabovesamplersในทางกลับกัน therecoveryof over95% fromCarbotrapX (¼CarbopackX) hasbeenreportedfor 1,3-BDafter168hstorage(Dettmeretal.,2000)ดังนั้น Carbopack Xhasbeensuccessfullyappliedforthesamplingof1, 3 BDfrom urbanair (Modigetal. 2004) andthesamplescouldbestoredina refrigeratoroveramonth (Martinetal. 2005Strandbergetal., 2005) TheseobservationsregardingCarbopackXcouldbeverifiedin ourstudy; therecoveryof1, 3 BDwasgoodafterstorageofseveral สัปดาห์Ourstudyalsoconfirmedthesamplingefficiencyof CarbopackXfor1, 3 BDandisopreneatsamplevolumeofp20l Thisvolumecorrespondstothesafevolumep82l/greportedby Martinetal(2005) . Inpreviousstudies, theCarbopackXcalibrationsampleshave beenpreparedusinggasstandards (Martinetal. 2005Strandbergetal., 2005)Usinggasstandardsindailyworkis อย่างไรก็ตาม ลำบาก andwe ดังนั้น preparedthecalibrationsamplesby spikingthetubeswithcalibrationsolutionTherepeatabilityof thespiked1, 3 BDcalibrationsamplespreparedinCarbopackX tubeswas ไร ดีCarbopackBwas ดังนั้น usedfor calibrationandthevalidityofthecalibrationwascheckedusing gasstandardsingasbags

ผลลัพธ์ (ไทย) 2:

Themeasurementof1,3-BDfromambientandindoorairhas beenproblematicmainlybecauseofquestionsregardingsampling andsamplestorage (Kimetal., 1999) .1,3-BDhasbeencollected fromairusingpassiveoractivesamplersbasedonmolecularsieve adsorbent.Airhumidityweakensthesamplingefficiencyof molecularsieve, whichalsopossessespoorstoragestability (Martinetal., 2005) .Samplersbasedoncarbon (ตะแกรง carbonmolecular, Carboxen569, Carboxen1003andCarbosieveSIII) alsohave poorstoragestability.Astorageof24hdecreasedtherecoveryof 1,3- BDo57% fortheabovesamplers.Conversely, therecoveryof over95% fromCarbotrapX (¼CarbopackX) hasbeenreportedfor 1,3-BDafter168hstorage ดังนั้น Carbopack Xhasbeensuccessfullyappliedforthesamplingof1,3-BDfrom urbanair refrigeratoroveramonth andthesamplescouldbestoredina (Martinetal 2005 (Dettmeretal, 2000.) (Modigetal 2004.). Strandbergetal ., 2005) TheseobservationsregardingCarbopackXcouldbeverifiedin ourstudy; therecoveryof1,3-BDwasgoodafterstorageofseveral weeks.Ourstudyalsoconfirmedthesamplingefficiencyof CarbopackXfor1,3-BDandisopreneatsamplevolumeofp20l Thisvolumecorrespondstothesafevolumep82l / greportedby Martinetal. (2005) Inpreviousstudies, theCarbopackXcalibrationsampleshave ลำบาก andwe จึง preparedthecalibrationsamplesby spikingthetubeswithcalibrationsolution.Therepeatabilityof thespiked1,3-BDcalibrationsamplespreparedinCarbopackX tubeswas แต่ poor.CarbopackBwas จึง usedfor calibrationandthevalidityofthecalibrationwascheckedusing gasstandardsingasbags

ผลลัพธ์ (ไทย) 3:

themeasurementof1,3-bdfromambientandindoorairhas beenproblematicmainlybecauseofquestionsregardingsampling andsamplestorage ( kimetal . , 1999 ) 1,3-bdhasbeencollected fromairusingpassiveoractivesamplersbasedonmolecularsieve ตัวดูดซับโมเลกุลลาร์ ซีฟ whichalsopossessespoorstoragestability airhumidityweakensthesamplingefficiencyof , ( martinetal . , 2005 ) samplersbasedoncarbon ( carboxen569 carbonmolecular , ตะแกรงcarboxen1003andcarbosievesiii ) alsohave poorstoragestability.astorageof24hdecreasedtherecoveryof 1,3-bdo57 % fortheabovesamplers ในทางกลับกัน therecoveryof over95 % fromcarbotrapx ( ¼ carbopackx ) hasbeenreportedfor 1,3-bdafter168hstorage ( dettmeretal . , 2000 ) ดังนั้น carbopack xhasbeensuccessfullyappliedforthesamplingof1,3-bdfrom urbanair ( modigetal .2004 ) andthesamplescouldbestoredina refrigeratoroveramonth ( martinetal . , 2005 ; strandbergetal . , 2005 ) theseobservationsregardingcarbopackxcouldbeverifiedin ourstudy ; therecoveryof1,3-bdwasgoodafterstorageofseveral สัปดาห์ ourstudyalsoconfirmedthesamplingefficiencyof carbopackxfor1,3-bdandisopreneatsamplevolumeofp20l . thisvolumecorrespondstothesafevolumep82l / greportedby martinetal ( 2005 )inpreviousstudies thecarbopackxcalibrationsampleshave , beenpreparedusinggasstandards ( martinetal . , 2005 ; strandbergetal . , 2005 ) usinggasstandardsindailyworkis , อย่างไรก็ตาม , ลําบาก , และเรา ดังนั้น preparedthecalibrationsamplesby spikingthetubeswithcalibrationsolution . therepeatabilityof thespiked1,3-bdcalibrationsamplespreparedincarbopackx tubeswas แต่ยากจน carbopackbwas ดังนั้นใช้ calibrationandthevalidityofthecalibrationwascheckedusing gasstandardsingasbags .