#METABOLOMICS WORKBENCH xin_hu_emory_20210504_062042 DATATRACK_ID:2616 STUDY_ID:ST001787 ANALYSIS_ID:AN002898 PROJECT_ID:PR001136 VERSION 1 CREATED_ON May 4, 2021, 5:13 pm #PROJECT PR:PROJECT_TITLE A scalable workflow for the human exposome PR:PROJECT_TYPE Untargeted GC-MS quantitative analysis PR:PROJECT_SUMMARY Complementing the genome with an understanding of the human exposome is an PR:PROJECT_SUMMARY important challenge for contemporary science and technology. Tens of thousands PR:PROJECT_SUMMARY of chemicals are used in commerce, yet cost for targeted environmental chemical PR:PROJECT_SUMMARY analysis limits surveillance to a few hundred known hazards. To overcome PR:PROJECT_SUMMARY limitations which prevent scaling to thousands of chemicals, we developed a PR:PROJECT_SUMMARY single-step express liquid extraction (XLE), gas chromatography high-resolution PR:PROJECT_SUMMARY mass spectrometry (GC-HRMS) analysis and computational pipeline to PR:PROJECT_SUMMARY operationalize the human exposome. We show that the workflow supports PR:PROJECT_SUMMARY quantification of environmental chemicals in human plasma (200 µL) and tissue PR:PROJECT_SUMMARY (≤ 100 mg) samples. The method also provides high resolution, sensitivity and PR:PROJECT_SUMMARY selectivity for exposome epidemiology of mass spectral features without a priori PR:PROJECT_SUMMARY knowledge of chemical identity. The simplicity of the method can facilitate PR:PROJECT_SUMMARY harmonization of environmental biomonitoring between laboratories and enable PR:PROJECT_SUMMARY population level human exposome research with limited sample volume. PR:INSTITUTE Emory University PR:DEPARTMENT Medicine/Pulmonary PR:LABORATORY Dean Jones PR:LAST_NAME Hu PR:FIRST_NAME Xin PR:ADDRESS Emory University Whitehead building (Rm 225), 615 Michael Street, Atlanta, PR:ADDRESS Georgia, 30322, USA PR:EMAIL xin.hu2@emory.edu PR:PHONE 4047275091 PR:FUNDING_SOURCE This study was supported by the NIEHS, U2C ES030163 (DPJ), U2C ES030859 (DIW) PR:FUNDING_SOURCE and P30 ES019776 (CJM), NIDDK RC2 DK118619 (KNL), NHLBI R01 HL086773 (DPJ), US PR:FUNDING_SOURCE Department of Defense W81XWH2010103 (DPJ), and the Chris M. Carlos and Catharine PR:FUNDING_SOURCE Nicole Jockisch Carlos Endowment Fund in Primary Sclerosing Cholangitis (PSC) PR:FUNDING_SOURCE (KNL). PR:CONTRIBUTORS Xin Hu, Douglas I. Walker, Yongliang Liang, M. Ryan Smith, Michael L. Orr, Brian PR:CONTRIBUTORS D. Juran, Chunyu Ma, Karan Uppal, Michael Koval, Greg S. Martin, David C. PR:CONTRIBUTORS Neujahr, Carmen J. Marsit, Young-Mi Go, Kurt Pennell, Gary W. Miller, PR:CONTRIBUTORS Konstantinos N. Lazaridis, Dean P. Jones #STUDY ST:STUDY_TITLE GC-XLE method development: dSPE and MgSO4 as clean-up for sample preparation ST:STUDY_TYPE Untargeted MS anlaysis ST:STUDY_SUMMARY Compared to using dispersive SPE (dSPE) based on the QuEChERS procedure, we ST:STUDY_SUMMARY found similar reproducibility using high purity MgSO4 to analyze standard ST:STUDY_SUMMARY reference material (SRM) of human serum and human plasma samples and slightly ST:STUDY_SUMMARY higher recovery of targeted chemicals using MgSO4. To avoid contamination by ST:STUDY_SUMMARY environmental chemicals in solvents and reagents used for QuEChERS, we chose to ST:STUDY_SUMMARY use high purity MgSO4 to remove water-soluble interferences. ST:INSTITUTE Emory University ST:DEPARTMENT Medicine/Pulmonary ST:LABORATORY Dean Jones ST:LAST_NAME Hu ST:FIRST_NAME Xin ST:ADDRESS Emory University Whitehead building (Rm 225), 615 Michael Street ST:EMAIL xin.hu2@emory.edu ST:PHONE 4047275091 #SUBJECT SU:SUBJECT_TYPE Human SU:SUBJECT_SPECIES Homo sapiens SU:TAXONOMY_ID 9606 #SUBJECT_SAMPLE_FACTORS: SUBJECT(optional)[tab]SAMPLE[tab]FACTORS(NAME:VALUE pairs separated by |)[tab]Raw file names and additional sample data SUBJECT_SAMPLE_FACTORS - CHDWB-10_dSPE_1 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-10_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-10_dSPE_2 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-10_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-10_dSPE_3 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-10_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-10_dSPE_4 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-10_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-1_MgSO4_1 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-1_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-1_MgSO4_2 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-1_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-1_MgSO4_3 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-1_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-1_MgSO4_4 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-1_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-2_MgSO4_1 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-2_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-2_MgSO4_2 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-2_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-2_MgSO4_3 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-2_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-2_MgSO4_4 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-2_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-3_MgSO4_1 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-3_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-3_MgSO4_2 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-3_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-3_MgSO4_3 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-3_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-3_MgSO4_4 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-3_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-4_MgSO4_1 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-4_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-4_MgSO4_2 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-4_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-4_MgSO4_3 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-4_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-4_MgSO4_4 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-4_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-5_MgSO4_1 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-5_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-5_MgSO4_2 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-5_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-5_MgSO4_3 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-5_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-5_MgSO4_4 cleanup:MgSO4 | source:CHDWB plasma RAW_FILE_NAME=CHDWB-5_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-6_dSPE_1 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-6_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-6_dSPE_2 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-6_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-6_dSPE_3 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-6_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-7_dSPE_1 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-7_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-7_dSPE_2 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-7_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-7_dSPE_3 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-7_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-7_dSPE_4 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-7_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-8_dSPE_1 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-8_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-8_dSPE_2 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-8_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-8_dSPE_3 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-8_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-8_dSPE_4 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-8_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-9_dSPE_1 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-9_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-9_dSPE_2 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-9_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-9_dSPE_3 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-9_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - CHDWB-9_dSPE_4 cleanup:dSPE | source:CHDWB plasma RAW_FILE_NAME=CHDWB-9_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - ExSTD5 cleanup:QC | source:std/solvent RAW_FILE_NAME=ExSTD5.mzXML SUBJECT_SAMPLE_FACTORS - Isooctane_1 cleanup:QC | source:std/solvent RAW_FILE_NAME=Isooctane_1.mzXML SUBJECT_SAMPLE_FACTORS - Isooctane_4 cleanup:QC | source:std/solvent RAW_FILE_NAME=Isooctane_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-10_dSPE_1 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-10_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-10_dSPE_2 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-10_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-10_dSPE_3 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-10_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-10_dSPE_4 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-10_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-1_MgSO4_1 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-1_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-1_MgSO4_2 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-1_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-1_MgSO4_3 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-1_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-1_MgSO4_4 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-1_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-2_MgSO4_1 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-2_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-2_MgSO4_2 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-2_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-2_MgSO4_3 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-2_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-2_MgSO4_4 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-2_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-3_MgSO4_1 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-3_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-3_MgSO4_2 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-3_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-3_MgSO4_3 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-3_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-3_MgSO4_4 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-3_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-4_MgSO4_1 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-4_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-4_MgSO4_2 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-4_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-4_MgSO4_3 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-4_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-4_MgSO4_4 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-4_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-5_MgSO4_1 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-5_MgSO4_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-5_MgSO4_2 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-5_MgSO4_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-5_MgSO4_3 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-5_MgSO4_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-5_MgSO4_4 cleanup:MgSO4 | source:SRM1958 RAW_FILE_NAME=NIST1958-5_MgSO4_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-6_dSPE_1 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-6_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-6_dSPE_2 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-6_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-6_dSPE_3 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-6_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-6_dSPE_4 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-6_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-7_dSPE_1 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-7_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-7_dSPE_2 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-7_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-7_dSPE_3 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-7_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-7_dSPE_4 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-7_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-8_dSPE_1 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-8_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-8_dSPE_2 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-8_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-8_dSPE_3 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-8_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-8_dSPE_4 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-8_dSPE_4.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-9_dSPE_1 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-9_dSPE_1.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-9_dSPE_2 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-9_dSPE_2.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-9_dSPE_3 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-9_dSPE_3.mzXML SUBJECT_SAMPLE_FACTORS - NIST1958-9_dSPE_4 cleanup:dSPE | source:SRM1958 RAW_FILE_NAME=NIST1958-9_dSPE_4.mzXML #COLLECTION CO:COLLECTION_SUMMARY Ethylenediaminetetraacetic acid (EDTA)-treated plasma samples were collected CO:COLLECTION_SUMMARY following standard operating procedures. Two samples were randomly selected from CO:COLLECTION_SUMMARY archival samples obtained from the Center for Health Discovery and Well Being CO:COLLECTION_SUMMARY (CHDWB) cohort of approximately 750 individuals and pooled to complete the test CO:COLLECTION_SUMMARY of XLE method development. The original study was conducted under Emory CO:COLLECTION_SUMMARY Investigational Review Board (IRB approval No. 00007243) and included both CO:COLLECTION_SUMMARY genders and individuals self-identifying as white, black, Hispanic and Asian. CO:COLLECTION_SUMMARY SRM1958 are standard reference material of human serum fortified with organic CO:COLLECTION_SUMMARY contaminants and were purchased from National Institute of Standards & CO:COLLECTION_SUMMARY Technology (NIST). CO:SAMPLE_TYPE Blood (plasma) #TREATMENT TR:TREATMENT_SUMMARY For pooled plasma or SRM1958, 50 µL formic acid (Emprove® Essential DAC, TR:TREATMENT_SUMMARY Sigma-Aldrich) was added to 200 µL plasma/SRM aliquots and immediately followed TR:TREATMENT_SUMMARY by addition of 200 µL hexane – ethyl acetate (2:1 v/v, ≥99% pure, TR:TREATMENT_SUMMARY Sigma-Aldrich) containing the internal standards (final concentration: 1 ng/mL). TR:TREATMENT_SUMMARY The sample mixture was shaken vigorously on ice using multi-tube vortexer (VWR TR:TREATMENT_SUMMARY VX-2500) for 1 h and centrifuged at 1000 g, 4 °C for 10 min. The sample mixture TR:TREATMENT_SUMMARY was chilled during entire extraction procedure. The organic supernatant was TR:TREATMENT_SUMMARY transferred to a new tube with 25 mg MgSO4 (≥99.99% pure, Sigma-Aldrich), or TR:TREATMENT_SUMMARY dSPE (Restek Catalog 26125) for testing of QuEChERS based procedure, and TR:TREATMENT_SUMMARY vortexed vigorously to remove water. After 10 min centrifugation at 1000 g, 80 TR:TREATMENT_SUMMARY µL of the final supernatant was spiked with instrumental internal standards TR:TREATMENT_SUMMARY (final concentration: 1 ng/mL) for analysis. #SAMPLEPREP SP:SAMPLEPREP_SUMMARY Same as treatment #CHROMATOGRAPHY CH:CHROMATOGRAPHY_SUMMARY Samples were analyzed with three injections using GC-HRMS with a Thermo CH:CHROMATOGRAPHY_SUMMARY Scientific Q Exactive GC hybrid quadrupole Orbitrap mass spectrometer with 2 µL CH:CHROMATOGRAPHY_SUMMARY per injection. A capillary DB-5MS column (15 m × 0.25 mm × 0.25 µm film CH:CHROMATOGRAPHY_SUMMARY thickness) was used with the following temperature program: hold 75 °C for 1 CH:CHROMATOGRAPHY_SUMMARY min, 25 °C/min to 180 °C, 6 °C/min to 250 °C, 20 °C/min to 350 °C and hold CH:CHROMATOGRAPHY_SUMMARY for 5 min. The flow rate of the helium carrier gas was 1 mL/min. Ion source and CH:CHROMATOGRAPHY_SUMMARY transfer line temperatures were 250°C and 280°C, respectively. Data were CH:CHROMATOGRAPHY_SUMMARY collected from 3 to 24.37 min with positive electron ionization (EI) mode (+70 CH:CHROMATOGRAPHY_SUMMARY eV), scanning from m/z 85.0000 to 850.0000 with a resolution of 60,000. CH:CHROMATOGRAPHY_TYPE GC CH:INSTRUMENT_NAME Thermo Trace 1310 CH:COLUMN_NAME Agilent DB5-MS (15m x 0.25mm, 0.25um) #ANALYSIS AN:ANALYSIS_TYPE MS #MS MS:INSTRUMENT_NAME Thermo Q Exactive Orbitrap MS:INSTRUMENT_TYPE Orbitrap MS:MS_TYPE EI MS:ION_MODE POSITIVE MS:MS_COMMENTS Data were collected from 3 to 24.37 min with positive electron ionization (EI) MS:MS_COMMENTS mode (+70 eV), scanning from m/z 85.0000 to 850.0000 with a resolution of MS:MS_COMMENTS 60,000. Raw data were examined by checking signal-to-noise ratio, peak shape and MS:MS_COMMENTS spectral information for surrogate and internal standards using a 5 ppm m/z MS:MS_COMMENTS tolerance and 30 s retention time window in xCalibur Qualbrowser software. Data MS:MS_COMMENTS extraction was performed by XCMS to generate about 40,000 chemical features MS:MS_COMMENTS identified by spectral m/z and retention time. MS:MS_RESULTS_FILE ST001787_AN002898_Results.txt UNITS:raw intensity Has m/z:Yes Has RT:Yes RT units:Seconds #END