BTEX in natural- and biogas with GC-MS

Stable isotope analysis of the elements in solid samples with isotope-ratio mass spectrometry (IRMS). Measurable isotopes given below: Isotope ratio Description δ13C Ratio of 13C to 12C δ2H (δD) Ratio of 2H to 1H (deuterium to protium) δ15N Ratio of 15N to 14N δ18O Ratio of 18O to 16O δ34S Ratio of 34S to 32S The results are reported as per mille (‰) deviations of the ratio of the heavy and light isotopes for the given element in comparison to a standard reference material. We have more than 30 IAEA, USGS, and in-house isotopic standards available to accommodate a wide range of expected ratios. Samples should be non-hazardous, dry, thermally decomposable and homogenous. The minimum sample count is 50 per batch. The price and turnaround time displayed apply to conventional sample matrices. The analysis is suitable for a wide range of materials, including, but not limited to, soils, plants, and insect tissue. All of our stable isotope analyses are conducted by ISO 17025-accredited facilities.

Analysis of gaseous samples using Raman spectroscopy.

Determination of selected volatile organic compounds (VOC) in water using the GC-MS and GC-FID techniques. Analysis can be conducted according to the following standard methods: EPA 624, EPA 5021A, EPA 8260, EPA 8015, EN ISO 10301, ISO 11423-1, and EN ISO 15680 The results of the analysis are reported in µg/L. Analysis includes the following analytes: Analyte: Reporting limits: chloromethane 1 µg/l bromomethane 1 µg/l dichloromethane 0.1 µg/l dibromimetaani 1 µg/l bromochloromethane 2 µg/l trichloromethane (chloroform) 0.1 µg/l tribromomethane (bromoform) 0.2 µg/l bromodichloromethane 0.1 µg/l dibromochloromethane 0.1 µg/l sum 4 trihalometanit 0.5 µg/l tetrachloromethane 0.1 µg/l trichlorofluoromethane 1 µg/l dichlorodifluoromethane 1 µg/l monochloroethane 1 µg/l 1,1-dichloroethane 0.1 µg/l 1,2-dichloroethane 0.1 µg/l 1,2-dibromietaani 0.5 µg/l 1,1,1-trichloroethane 0.1 µg/l 1,1,2-trichloroethane 0.1 µg/l 1,1,1,2-tetrachloroethane 0.1 µg/l 1,1,2,2-tetrachloroethane 1 µg/l vinyl chloride 0.1 µg/l 1,1-dichloroethene 0.1 µg/l cis-1,2-dichloroethene 0.1 µg/l trans-1,2-dichloroethene 0.1 µg/l amount of 1,2-dichloroethene 0.2 µg/l trichloroethylene 0.1 µg/l sum of 11 chlorinated hydrocarbons 1.1 µg/l tetrachloroethene 0.1 µg/l Sum of trichloroethylene and tetrachloroethylene 0.2 µg/l sum 5 chlorinated ethylenes 0.5 µg/l 1,2-dichloropropane 1 µg/l 1,3-dichloropropane 1 µg/l 2,2-dichloropropane 1 µg/l 1,2,3-trichloropropane 1 µg/l 1,2-dibromo-3-chloropropane 1 µg/l 1,1-dichloro-1-propene 1 µg/l cis-1,3-dichloro-1-propene 1 µg/l trans-1,3-dichloropropene 1 µg/l hexachlorobutadiene 1 µg/l 2-chlorotoluene 1 µg/l 4-chlorotoluene 1 µg/l monochlorobenzene 0.1 µg/l bromobenzene 1 µg/l 1,2-dichlorobenzene 0.1 µg/l 1,3-dichlorobenzene 0.1 µg/l 1,4-dichlorobenzene 0.1 µg/l amount of 3 dichlorobenzene 0.3 µg/l 1,2,3-trichlorobenzene 0.1 µg/l 1,2,4- trichlorobenzene 0.1 µg/l 1,3,5-trichlorobenzene 0.1 µg/l amount of 3 trichlorobenzene 0.4 µg/l benzene 0.1 µg/l toluene 0.5 µg/l ethylbenzene 0.1 µg/l o-xylene 0.1 µg/l m/p-xylene 0.2 µg/l sum of xylenes 0.3 µg/l sum of BTEX 1 µg/l styrene 0.2 µg/l isopropylbenzene 1 µg/l n-propylbenzene 1 µg/l 1,2,4-trimethylbenzene 1 µg/l 1,3,5-trimethylbenzene 1 µg/l n-butylbenzene 1 µg/l sec-butylbenzene 1 µg/l tert-butylbenzene 1 µg/l p-isopropyltoluene 1 µg/l naphthalene 1 µg/l Diisopropyl ether (DIPE) 0.6 µg/l ETBE (ethyl tert-butyl ether) 0.2 µg/l MTBE (methyl tert-butyl ether) 0.2 µg/l tert-amyl ethyl ether (TAEE) 0.2 µg/l TAME 0.2 µg/l tert-butyl alcohol (TBA) 5 µg/l ethanol 100 µg/l A customized offer can also be prepared if you are interested in analyzing only individual compounds from a sample. Suitable sample containers for analysis can be ordered through us. Sample containers picked up from Measurlabs are included in the price of the analysis, but sample containers can also be shipped to the customer for a separate fee.

Determination of aliphatic alkane concentrations in natural gas and biogas by in-house µGC-µTCD analysis. The following compounds are quantified: Methane (CH4), Ethane (C2H6), Propane (C3H8), Isobutane (C4H10), Butane (C4H10), Isopentane and pentane (C5H12), Hexane (C6H14). The LOQ is 10 ppm-vol for all target compounds. Results are reported in V-%. Please note that the safety data sheet (SDS) must be provided with gas samples. The samples should also be shipped to Measurlabs soon after sampling, as some analytes may escape the sampling vessel over time.

The EN 16516 standard outlines a test chamber method for determining volatile and semi-volatile organic compound (VOC and SVOC) emissions from construction products. Emissions are typically measured 28 days after the installation of representative test specimens in the test chamber. Conditions within the chamber are kept constant throughout the testing period, with the temperature at 23 ± 1 °C, relative humidity at 50 ± 5 %, air change rate at 0.5 per hour, and air velocity above the specimen at 0.1–0.3 m/s. The loading factor (ratio of exposed test specimen area to the empty chamber volume) is chosen based on product type and intended conditions of use. At the end of the test period, air is collected from the chamber using adsorbent tubes and analyzed by thermal desorption GC-MS (TD-GC/MS) to identify and quantify target compounds. The results will include: Individual concentrations of identified target compounds (including known carcinogenic VOCs), identified non-target compounds, and unidentified compounds. The last two are reported as toluene equivalents., Total VOC (TVOC), calculated as the sum of all compounds (identified and unidentified) eluting between and including n-hexane and n-hexadecane., Total SVOC (TSVOC), calculated as the sum of all compounds eluting after n-hexadecane, up to and including n-docosane.. For compliance assessment, the measured VOC levels can be compared with limits specified in national emissions standards or sustainability certifications, such as the German AgBB, French ANSES, Finnish M1 Emission Classification, or the Nordic Swan Ecolabel. Depending on the scheme, maximum limits can apply to TVOC, total carcinogenic VOC, and/or individual compounds, such as formaldehyde. The results for individual compounds can also be compared with EU-LCI values, harmonized health-based reference values based on the ‘lowest concentration of interest’ concept.

With this analysis, the volatile organic compounds (VOCs) present in a biogas sample can be quantified. Typically, the boiling range of the detected VOCs is 60-280 °C, but lighter hydrocarbons are also quantified and identified. The analysis employs a GC-MS method (typically TD-GC-MS) and utilizes external standard materials and mass-spectrum libraries to identify and quantify the compounds. The analysis results will be reported in the V-% unit. Price includes the quantification (in toluene equivalents) and identification of the 30 major peaks from the chromatogram (substances up to 280 °C boiling point). Samples must be delivered in gas sampling bags (2 liters in volume), and the safety data sheet (SDS) must be provided with the samples.

Measurement of phosphine (PH3) in natural gas, biogas, and related fuel gas samples. Sampling is performed by collecting the gas into an AgNO3-treated quartz filter using a fixed-volume pump, preferably at a flow rate of 1 L/min. The collected filter is analyzed by ICP according to the MétroPol M-134 method. Results are reported as numerical values in µg per filter, and the typical quantification limit is 0.91 µg of phosphine per filter. The displayed price applies to small sample sets, and large batches or recurring orders are eligible for discounts. Please request a quote from our testing experts.

Determination of NH3 content in biomethane, biogas, and natural gas samples. Sampling is carried out by drawing a fixed gas volume through an H2SO4-treated Quartz+ PVC filter with a fixed-volume pump, preferably at 1 L/min, so that ammonia is trapped on the filter medium. We can provide the sampling equipment upon request. The collected filter is analyzed by ion chromatography according to the MétroPol M-13 method. Results are reported as numerical values in mg per filter. The displayed price applies to small sample sets; large batches and recurring orders are eligible for discounts. Please request a quote from our testing experts.

Compositional analysis of gas samples in accordance with NF X 20-303, DIN 51872-4, or in-house µGC/µTCD methods. The most suitable method is selected based on the analyzed gas and target analyte(s). Any 1-8 analytes from the table below can be selected. The price will be determined based on the number of substances analyzed. Compound Formula LOQ (ppm-vol.) acetylene C2​H2 10 argon Ar 10 nitrogen N2 10 butane C4​H10 10 carbon dioxide CO2 10 sulfur dioxide SO2 20 water vapor H2​O 10 ethane C2​H6 10 ethylene C2​H4 10 helium He 10 hydrogen H2 5 hydrogen sulfide H2​S 10 isobutane C4​H10​ 10 isopentane C5​H12​ 10 methane CH4​ 10 carbon monoxide CO 10 oxygen O2​ 10 pentane C5​H12​ 10 propane C3​H8​ 10 nitrous oxide N2​O 10 Gas samples must be collected in 2L multifoil bags, and the safety data sheet (SDS) must be provided with the shipment. Quick delivery to Measurlabs after sampling is recommended, as some analytes may escape the sampling vessel over time. This is particularly relevant for H2, CO, CO2, and O2. When requesting a quote, please describe the sample matrix and list the target analytes.

Determination of sulfur compounds in biogas or natural gas by an in-house GC-SCD method (gas chromatography with sulfur-selective chemiluminescence detection). Results are reported in ppm (vol) with an LOQ of 0.03 ppm for all listed compounds. The following compounds are quantified: Hydrogen sulfide (H₂S), Carbonyl sulfide (OCS), Methyl mercaptan (CH₃SH), Ethyl mercaptan (C₂H₅SH), Dimethyl sulfide (Me₂S), Dimethyl disulfide (Me₂S₂), Carbon disulfide (CS₂, semi-quantitative), Total sulfur compounds, including C3+ mercaptans. Gas samples must be collected in 2 L multifoil bags, and a safety data sheet must be provided with the shipment. Prompt delivery after sampling is recommended to preserve sample integrity. If analysis is required within 48 hours of sampling, this must be agreed in advance. The displayed price applies to small sample sets; large batches and recurring orders are eligible for discounts. Please request a quote from our testing experts using the form below.