Aliphatic alkanes, alkenes, and alkynes in natural and biogas

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.

Determination of total sulfur in natural gas and biogas by in-house IC method. Results are reported in mg/Nm³, with a typical LOQ of 3 mg/Nm³. Gas samples must be collected in 2 L multifoil bags, and the safety data sheet (SDS) must be provided with the shipment. Prompt delivery after sampling is recommended, as analytes may escape the sampling vessel. The displayed price applies to small sample sets; larger batches and recurring orders are eligible for volume discounts. Please request an offer using the form below.

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.

Determination of total chemically bound oxygen in pyrolysis oil, gasoline, and other petroleum products. The analysis is conducted using a reductive pyrolysis method specified in the ASTM D5622 standard, and the results are reported as the mass percent (%) of oxygen in the sample. Typical applications of the test include refinery and terminal quality control, oxygenate blending verification, and regulatory compliance testing. Applicable limits include 2.7–3.7% (m/m) under EN 228 and 2.0–2.7 wt% under US EPA requirements. The displayed price applies to small sample sets, while larger batches and recurring orders are eligible for discounted pricing. Please request an offer from our experts using the form below.