Total sulfur in natural- and biogas

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.

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 total chlorine in gas samples using an in-house ion chromatography (IC) method. Results are reported as numerical values in mg/Nm³.  Gas samples need to be collected in 2 L multifoil bags, and the SDS must be provided with the shipment. Quick delivery to Measurlabs after sampling is recommended to maintain sample representativeness, as some analytes may escape the sampling vessel during storage. The displayed price applies to small sample sets; larger batches and recurring orders are eligible for volume discounts.

Quantification of volatile siloxanes and trimethylsilanol in biogas, biomethane, and natural gas using an in-house GC-MS method. Siloxanes form abrasive silica deposits during combustion, which makes the measurement relevant for equipment protection and gas quality verification against biomethane specifications such as EN 16723-1 and EN 16723-2. The following compounds are quantified, with typical LOQs: Hexamethylcyclotrisiloxane (D3): 0.10 mg/Nm³, Octamethylcyclotetrasiloxane (D4): 0.20 mg/Nm³, Decamethylcyclopentasiloxane (D5): 0.15 mg/Nm³, Hexamethyldisiloxane (L2): 0.10 mg/Nm³, Octamethyltrisiloxane (L3): 0.10 mg/Nm³, Decamethyltetrasiloxane (L4): 0.10 mg/Nm³, Dodecamethylpentasiloxane (L5): 0.5 mg/Nm³, Trimethylsilanol (SiOH): 0.10 mg/Nm³. Results for each compound are reported in mg/Nm³. The displayed price applies to small sample sets; larger batches and recurring orders are eligible for volume discounts.

Quantification of aliphatic alkanes, alkenes, and alkynes in natural gas and biogas by in-house GC-MS and µGC-µTCD methods. Results are reported in V-%. The following compounds are quantified, with a typical LOQ of 10 ppm-vol for all analytes: Methane, Ethane, Propane, Isobutane, Butane and acetylene, Isopentane and pentane, Hexane, Ethylene, 1,3-Butadiene. 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, as some analytes may escape the sampling vessel. The displayed price applies to small sample sets; larger batches and recurring orders are eligible for volume discounts.

Simultaneous determination of total fluorine, chlorine, and sulfur in natural gas and biogas by in-house IC method. Results are reported in mg/Nm³. Typical LOQs: Total fluorine: 1.3 mg/Nm³, Total chlorine: 1.3 mg/Nm³, Total sulfur: 3 mg/Nm³. Gas samples must be collected in 2 L multifoil bags, and the safety data sheet must be provided with the shipment. Prompt delivery after sampling is recommended, as some analytes may escape the sampling vessel. The displayed price applies to small sample sets; larger batches and recurring orders are eligible for volume discounts.

BTEX analysis of natural gas and biogas samples with an in-house GC-MS method. The analysis includes the following substances, with results reported in the V-% unit (typical LOQs in parentheses): Benzene (10 ppm-vol), Toluene (10 ppm-vol), Ethylbenzene (10 ppm-vol), Sum of xylenes (10 ppm-vol). Please note that gas samples must be collected in multifoil bags (2 L), and the safety data sheet (SDS) must be provided with the shipment.

This metal screening analysis includes the semi-quantitative determination of 70 elements. The method can be used, for example, to determine the background concentrations of metals in environmental samples or to study the elemental distribution of unknown samples. Screening is also often performed to assess which metals should be analyzed by a quantitative method. The measurement is performed using a high-resolution ICP-MS technique (ICP-SFMS), which can identify very low elemental concentrations. A semi-quantitative determination of the following elements is included: Ag, Al, As, Au, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Hg, Ho, I, Ir, K, La, Lu, Mg, Mn, Mo, Na, Nb, Nd, Ni, Os, P, Pb, Pd, Pr, Pt, Rb, Re, Rh, Ru, S, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Te, Th, Ti, Tl, Tm, U, V, W, Y, Yb, Zn and Zr. However, please note that some elements may not be determinable due to matrix interference. During this semi-quantitative analysis, the instrument is calibrated for about 30 elements. The rest of the analytes are quantified using sensitivity factors for calibrated elements with similar mass and first ionization potential, considering isotope abundances. Quantitative analysis is also available at an additional price. During this analysis, all elements are calibrated (excluding halogens and Os). Please ask for an offer for this service.

Diene value analysis for pyrolysis oil to determine the concentration of reactive diene compounds that can accelerate polymerization and gum formation, affecting product stability and downstream process performance. The analysis is performed in accordance with the UOP 326 standard, which is widely applied to diene value determination in petroleum- and pyrolysis-derived oil matrices. The sample is reacted with maleic anhydride, and the diene content is determined by back-titration of the unreacted anhydride. Results are reported in g/100 g. Typical applications include process control, feedstock qualification, and specification setting prior to hydrotreatment, blending, or other upgrading steps. The results can also be used to compare pyrolysis conditions and monitor batch-to-batch variation. The displayed price applies to small sample sets. Please specify the number of samples when requesting a quote, as volume discounts are available for larger batches.