<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Saltzman, E. S.</style></author><author><style face="normal" font="default" size="100%">De Bruyn, W. J.</style></author><author><style face="normal" font="default" size="100%">Lawler, M. J.</style></author><author><style face="normal" font="default" size="100%">Marandino, C. A.</style></author><author><style face="normal" font="default" size="100%">McCormick, C. A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A chemical ionization mass spectrometer for continuous underway shipboard analysis of dimethylsulfide in near-surface seawater</style></title><secondary-title><style face="normal" font="default" size="100%">Ocean Science</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Ocean Sci.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">dms</style></keyword><keyword><style  face="normal" font="default" size="100%">flux</style></keyword><keyword><style  face="normal" font="default" size="100%">gases</style></keyword><keyword><style  face="normal" font="default" size="100%">ocean</style></keyword><keyword><style  face="normal" font="default" size="100%">Saltzman Lab</style></keyword><keyword><style  face="normal" font="default" size="100%">sea</style></keyword><keyword><style  face="normal" font="default" size="100%">sensitivity</style></keyword><keyword><style  face="normal" font="default" size="100%">sulfide</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">pub/715</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">537-546</style></pages><isbn><style face="normal" font="default" size="100%">1812-0784</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A compact, low-cost atmospheric pressure, chemical ionization mass spectrometer ('mini-CIMS') has been developed for continuous underway shipboard measurements of dimethylsulfide (DMS) in seawater. The instrument was used to analyze DMS in air equilibrated with flowing seawater across a porous Teflon membrane equilibrator. The equilibrated gas stream was diluted with air containing an isotopically-labeled internal standard. DMS is ionized at atmospheric pressure via proton transfer from water vapor, then declustered, mass filtered via quadrupole mass spectrometry, and detected with an electron multiplier. The instrument described here is based on a low-cost residual gas analyzer (Stanford Research Systems), which has been modified for use as a chemical ionization mass spectrometer. The mini-CIMS has a gas phase detection limit of 220 ppt DMS for a 1 min averaging time, which is roughly equivalent to a seawater DMS concentration of 0.1 nM DMS at 20 degrees C. The mini-CIMS has the sensitivity, selectivity, and time response required for underway measurements of surface ocean DMS over the full range of oceanographic conditions. The simple, robust design and relatively low cost of the instrument are intended to facilitate use in process studies and surveys, with potential for long-term deployment on research vessels, ships of opportunity, and large buoys.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">ISI:000273059600012</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;ISI Document Delivery No.: 536QTTimes Cited: 0Cited Reference Count: 23Cited References:      ANDREAE MO, 1983, ANAL CHEM, V55, P608     BANDY AR, 2002, J GEOPHYS RES-ATMOS, V107, ARTN 4743     BATES TS, 1987, J GEOPHYS RES-OCEANS, V92, P2930     CAMPARGUE R, 1984, J PHYS CHEM-US, V88, P4466     DACEY JWH, 1984, GEOPHYS RES LETT, V11, P991     DACEY JWH, 1998, DEEP-SEA RES PT I, V45, P2085     JOHNSON JE, 1999, ANAL CHIM ACTA, V395, P119     KELLY TJ, 1991, ATMOS ENVIRON A-GEN, V25, P2155     KETTLE AJ, 1999, GLOBAL BIOGEOCHEM CY, V13, P399     KIENE RP, 2006, LIMNOL OCEANOGR-METH, V4, P80     MARANDINO CA, 2005, GEOPHYS RES LETT, V32, ARTN L15806     MARANDINO CA, 2007, J GEOPHYS RES-ATMOS, V112, ARTN D03301     MARANDINO CA, 2008, GEOPHYS RES LETT, V35, P3301, ARTN L23812     MARANDINO CA, 2009, ATMOS CHEM PHYS, V9, P345     NEMCEK N, 2008, GLOBAL BIOGEOCHEM CY, V22, ARTN GB2009     PARK KT, 2008, LIMNOL OCEANOGR-METH, V6, P548     SIMO R, 2002, GLOBAL BIOGEOCHEM CY, V16, ARTN 1078     SPICER CW, 1996, J GEOPHYS RES-ATMOS, V101, P29137     SUNNER J, 1988, ANAL CHEM, V60, P1300     SUNNER J, 1988, ANAL CHEM, V60, P1308     TORTELL PD, 2005, GEOCHEM GEOPHY GEOSY, V6, ARTN Q11M04     TORTELL PD, 2005, LIMNOL OCEANOGR-METH, V3, P24     TURNER SM, 1985, J ATMOS CHEM, V2, P223Saltzman, E. S. De Bruyn, W. J. Lawler, M. J. Marandino, C. A. McCormick, C. A.National Science Foundation Atmospheric Chemistry [ATM-0426314]; US SOLASThe authors thank Stanford Research Systems for their assistance in understanding the SRS RGA. We especially thank Scott Miller, collaborator and PI of the Knorr 2007 cruise, Liz Caparelli, theWoods Hole Marine Department, and the Captain and crew of the R/V Knorr. This research was funded by the National Science Foundation Atmospheric Chemistry Program (ATM-0426314) and is a contribution to the US SOLAS program.Copernicus gesellschaft mbhGottingen&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">&lt;p&gt;[Saltzman, E. S.; Lawler, M. J.; Marandino, C. A.; McCormick, C. A.] Univ Calif Irvine, Irvine, CA 92717 USA. [De Bruyn, W. J.] Chapman Univ, Orange, CA USA.Saltzman, ES, Univ Calif Irvine, Irvine, CA 92717 USA.eric.saltzman@uci.edu&lt;/p&gt;</style></auth-address></record></records></xml>