Sulfur standard solution for use in the determination of low sulfur concentration in liquid fuels |
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Authors: | Yuko Kitamaki Yoshitaka Shimizu Kenji Kato |
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Institution: | (1) Organic Standards Section 1, National Metrology Institute of Japan (NMIJ), AIST, 1–1–1, Umezono, Tsukuba, Ibaraki 305–8563, Japan |
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Abstract: | A sulfur reference solution at the 1 mg kg−1 level, NMIJ CRM 4215-a, has been issued by the National Metrology Institute of Japan at the National Institute of Advanced
Industrial Science and Technology (NMIJ/AIST). The intended use of this CRM is for the calibration of standards used in the
determination of sulfur in liquid fuels. The certified value of this CRM was determined using the gravimetric blending method.
Thiophene and toluene were chosen as the high purity sulfur compound and the dilution solvent, respectively. Measurements
of the trace sulfur in the solvent were performed using the total sulfur analyzer with an enrichment system; the standard
addition method was employed. When trace sulfur in the solvent was evaluated, the signal which appears with no sample injection
was subtracted as the background. |
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Keywords: | Sulfur Trace sulfur in solvent Reference materials Fuels Quality control |
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