File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Determination of N-methyl-N'-nitro-N-nitrosoguanidine in aerosol by differential pulse polarography

TitleDetermination of N-methyl-N'-nitro-N-nitrosoguanidine in aerosol by differential pulse polarography
Authors
KeywordsAerosol
Chemical analysis
Methodology
Polarography
Pulse polarography
Issue Date1988
Citation
Fresenius Zeitschrift Fur Analytische Chemie, 1988, v. 331 n. 5, p. 490-494 How to Cite?
AbstractThe application of a sensitive electroanalytical technique for the analysis of N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) in aerosol was investigated. Cyclic voltammetric studies of the reduction of MNNG in acidic media showed three reduction waves. The first reduction step was assigned to be the reduction of the nitroso group and the second and third steps the reduction of the nitro group. The second peak was selected for the analysis as it was found to give a constant high current at pH below 1 and it was stable up to 40 days under normal daylight exposure and bubbling air at slow flow rate. Optimised parameters for the sensitive differential pulse polarographic technique were determined and the sampling conditions were investigated. The standard addition method was used to reduce the marix interference and the peak current was measured by the difference of current before and after UV irradiation so as to eliminate the interference caused by trace metals and electroactive and UV stable organic compounds present in air. The developed method was used to analyse MNNG aerosol in an animal room. The detection limit was found to be about 3 μg/m3 for a sampling period of 48 h with a flow rate of 100 ml/min for the scrubbing method, whereas for the membrane filter method it was about 0.1 μg/m3 for a sampling period of 8h at a flow rate of 4.9 l/min.
Persistent Identifierhttp://hdl.handle.net/10722/167476
ISSN

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_US
dc.contributor.authorTing, DTWen_US
dc.contributor.authorFung, KWen_US
dc.date.accessioned2012-10-08T03:07:28Z-
dc.date.available2012-10-08T03:07:28Z-
dc.date.issued1988en_US
dc.identifier.citationFresenius Zeitschrift Fur Analytische Chemie, 1988, v. 331 n. 5, p. 490-494en_US
dc.identifier.issn0016-1152en_US
dc.identifier.urihttp://hdl.handle.net/10722/167476-
dc.description.abstractThe application of a sensitive electroanalytical technique for the analysis of N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) in aerosol was investigated. Cyclic voltammetric studies of the reduction of MNNG in acidic media showed three reduction waves. The first reduction step was assigned to be the reduction of the nitroso group and the second and third steps the reduction of the nitro group. The second peak was selected for the analysis as it was found to give a constant high current at pH below 1 and it was stable up to 40 days under normal daylight exposure and bubbling air at slow flow rate. Optimised parameters for the sensitive differential pulse polarographic technique were determined and the sampling conditions were investigated. The standard addition method was used to reduce the marix interference and the peak current was measured by the difference of current before and after UV irradiation so as to eliminate the interference caused by trace metals and electroactive and UV stable organic compounds present in air. The developed method was used to analyse MNNG aerosol in an animal room. The detection limit was found to be about 3 μg/m3 for a sampling period of 48 h with a flow rate of 100 ml/min for the scrubbing method, whereas for the membrane filter method it was about 0.1 μg/m3 for a sampling period of 8h at a flow rate of 4.9 l/min.-
dc.languageengen_US
dc.relation.ispartofFresenius Zeitschrift fur Analytische Chemieen_US
dc.subjectAerosol-
dc.subjectChemical analysis-
dc.subjectMethodology-
dc.subjectPolarography-
dc.subjectPulse polarography-
dc.titleDetermination of N-methyl-N'-nitro-N-nitrosoguanidine in aerosol by differential pulse polarographyen_US
dc.typeArticleen_US
dc.identifier.emailFung, YS:ysfung@hku.hken_US
dc.identifier.authorityFung, YS=rp00697en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/BF00467036-
dc.identifier.scopuseid_2-s2.0-0023753223en_US
dc.identifier.volume331en_US
dc.identifier.issue5en_US
dc.identifier.spage490en_US
dc.identifier.epage494en_US
dc.identifier.scopusauthoridFung, YS=13309754700en_US
dc.identifier.scopusauthoridTing, DTW=7006986136en_US
dc.identifier.scopusauthoridFung, KW=7202934752en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats