California Institute of Technology

Contact Info:

Nathan Dalleska

1200 E California Blvd

Caltech 131-24

Pasadena, CA 91125

https://resnick.caltech.edu/research/resource-centers/water-and-environment-lab-wel

Grants and Identifiers:

RRID: RRID:SCR_022714

Instrumentation:

Other Equipment

Thermo ISQ-EM Single Quadrupole ESI-MS coupled to Thermo Integrion IC Dual Thermo Integrion IC system for simultaneous anion and cation analyses Picarro L2140i Water Isotope Analyzer OI Analytical Aurora 1030W TIC/TOC analyzer HP 5890 GC-TCD HP 5890 GC-FID with 7694 Headspace Sampler HP 5890-5972 GC-MS Varian Saturn 2000 GC-MS

Services Provided:

GC

HRAM Mass Spectrometry

Inductively Coupled Plasma Mass-Spectrometry

Mass Spectrometry - Small Molecules

Relevant Publications:

1.) Huang Y, Kenseth CM, Dalleska NF, Seinfeld JH (2020 Oct 20). Coupling Filter-Based Thermal Desorption Chemical Ionization Mass Spectrometry with Liquid Chromatography/Electrospray Ionization Mass Spectrometry for Molecular Analysis of Secondary Organic Aerosol. Environmental science & technology, 54(20), 13238-13248. doi: 10.1021/acs.est.0c01779. ID: 32530277.

2.) Kenseth CM, Hafeman NJ, Huang Y, Dalleska NF, Stoltz BM, Seinfeld JH (2020 Oct 20). Synthesis of Carboxylic Acid and Dimer Ester Surrogates to Constrain the Abundance and Distribution of Molecular Products in α-Pinene and β-Pinene Secondary Organic Aerosol. Environmental science & technology, 54(20), 12829-12839. doi: 10.1021/acs.est.0c01566. ID: 32813970.

3.) Neubauer C, Crémière A, Wang XT, Thiagarajan N, Sessions AL, Adkins JF, Dalleska NF, Turchyn AV, Clegg JA, Moradian A, Sweredoski MJ, Garbis SD, Eiler JM (2020 Feb 18). Stable Isotope Analysis of Intact Oxyanions Using Electrospray Quadrupole-Orbitrap Mass Spectrometry. Analytical chemistry, 92(4), 3077-3085. doi: 10.1021/acs.analchem.9b04486. ID: 32011865.

4.) Neubauer C, Sessions AL, Booth IR, Bowen BP, Kopf SH, Newman DK, Dalleska NF (2018 Dec 30). Towards measuring growth rates of pathogens during infections by D₂ O-labeling lipidomics. Rapid communications in mass spectrometry : RCM, 32(24), 2129-2140. doi: 10.1002/rcm.8288. ID: 30252972.

5.) Kenseth CM, Huang Y, Zhao R, Dalleska NF, Hethcox JC, Stoltz BM, Seinfeld JH (2018 Aug 14). Synergistic O₃ + OH oxidation pathway to extremely low-volatility dimers revealed in β-pinene secondary organic aerosol. Proceedings of the National Academy of Sciences of the United States of America, 115(33), 8301-8306. . ID: 30076229.

6.) Zhao R, Kenseth CM, Huang Y, Dalleska NF, Kuang XM, Chen J, Paulson SE, Seinfeld JH (2018 Jun 14). Rapid Aqueous-Phase Hydrolysis of Ester Hydroperoxides Arising from Criegee Intermediates and Organic Acids. The journal of physical chemistry. A, 122(23), 5190-5201. doi: 10.1021/acs.jpca.8b02195. ID: 29782168.

7.) Zhao R, Kenseth CM, Huang Y, Dalleska NF, Seinfeld JH (2018 Feb 20). Iodometry-Assisted Liquid Chromatography Electrospray Ionization Mass Spectrometry for Analysis of Organic Peroxides: An Application to Atmospheric Secondary Organic Aerosol. Environmental science & technology, 52(4), 2108-2117. doi: 10.1021/acs.est.7b04863. ID: 29370527.

8.) Tavormina PL, Kellermann MY, Antony CP, Tocheva EI, Dalleska NF, Jensen AJ, Valentine DL, Hinrichs KU, Jensen GJ, Dubilier N, Orphan VJ (2017 Jan). Starvation and recovery in the deep-sea methanotroph Methyloprofundus sedimenti. Molecular microbiology, 103(2), 242-252. doi: 10.1111/mmi.13553. ID: 27741568.

9.) Spain EM, Núñez ME, Kim HJ, Taylor RJ, Thomas N, Wengen MB, Dalleska NF, Bromley JP, Schermerhorn KH, Ferguson MA (2016 Jun). Identification and differential production of ubiquinone-8 in the bacterial predator Bdellovibrio bacteriovorus. Research in microbiology, 167(5), 413-23. . ID: 27106259.

10.) Zhang X, McVay RC, Huang DD, Dalleska NF, Aumont B, Flagan RC, Seinfeld JH (2015 Nov 17). Formation and evolution of molecular products in α-pinene secondary organic aerosol. Proceedings of the National Academy of Sciences of the United States of America, 112(46), 14168-73. . ID: 26578760.

11.) Neubauer C, Dalleska NF, Cowley ES, Shikuma NJ, Wu CH, Sessions AL, Newman DK (2015 Sep). Lipid remodeling in Rhodopseudomonas palustris TIE-1 upon loss of hopanoids and hopanoid methylation. Geobiology, 13(5), 443-53. doi: 10.1111/gbi.12143. ID: 25923996.

12.) Schilling Fahnestock KA, Yee LD, Loza CL, Coggon MM, Schwantes R, Zhang X, Dalleska NF, Seinfeld JH (2015 May 14). Secondary organic aerosol composition from C12 alkanes. The journal of physical chemistry. A, 119(19), 4281-97. doi: 10.1021/jp501779w. ID: 24814371.

13.) Malott RJ, Wu CH, Lee TD, Hird TJ, Dalleska NF, Zlosnik JE, Newman DK, Speert DP (2014 Sep). Fosmidomycin decreases membrane hopanoids and potentiates the effects of colistin on Burkholderia multivorans clinical isolates. Antimicrobial agents and chemotherapy, 58(9), 5211-9. . ID: 24957830.

14.) Green-Saxena A, Dekas AE, Dalleska NF, Orphan VJ (2014 Jan). Nitrate-based niche differentiation by distinct sulfate-reducing bacteria involved in the anaerobic oxidation of methane. The ISME journal, 8(1), 150-63. . ID: 24008326.

Description:

An open access, user operated facility providing access to chromatography and mass spectrometry techniques including GC and GC-MS, IC and IC-MS, ICP-MS, LC and LC-MS, and other environmentally relevent techniques such as isotope ratio measurements of water, TIC/TOC, and laser diffraction particle size analysis.