Amperometric Method for Mercaptan Sulfur in Hydrocarbons

Grimes, M.; Puckett, J. E.; Newby, B.J.; Heinrich, B.

doi:10.1021/ac60097a053

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Apparatus and Methodology1

Interferences From Mercaptans1

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1956

1970

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Cited by 13 publications

(3 citation statements)

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“…A unitized assembly for the rotating platinum electrode W'as constructed by Agazzi and others (4). Other apparatus involving similar electrodes have been described by Herbert and Denson (60), Grimes and others (55), Konopik (111), Mader and Frediani (124), and Seagers and Frediani (163). Apparatus involving a vibrating electrode has been used by Lindsey (122) and Harris and Lindsey (56).…”

Section: Apparatus and Methodologymentioning

confidence: 95%

Amperometric Titrations

Laitinen¹

1956

Anal. Chem.

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Section: Apparatus and Methodologymentioning

confidence: 95%

Amperometric Titrations

Laitinen¹

1956

Anal. Chem.

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“…Determine the mercaptan sulfur content of the naphtha by any method sensitive to 1 p.p.m. (4,6,14)• In this work the potentiometric method of Tamele and Ryland (14) was used.…”

Section: Interferences From Mercaptansmentioning

confidence: 99%

Determination of Traces of Water in Hydrocarbons in Gasoline Boiling Range. Sample Handling and Interferences

Loveland¹,

Webster²,

Hablitzel³

et al. 1958

Anal. Chem.

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Figure 2 shows the results of varying the acidity and amount of molybdate reagent. The 10% molybdate solution was prepared without sulfuric acid (1); the 5% solution contained 1 equivalent per ml. Curves 1, 2, and 3 of Figure 2 represent the result of varying the acidity before addition of the molybdate reagent, with the amount of molybdate held constant. At the higher pH the maximum was reached 0.2 to 0.4 minute after addition of molybdate; however, the results are difficult to reproduce because of the sharp and variable peak.An increase in the amount of molybdate reagent, with the acidity held constant, also increased the rate of approach to the maximum, but the sharp peak was not present (curves 1 and 4, Figure 2). As all curves were stabilized in the 1-minute region and small differences in pH had minor effect, 1 minute was selected as the best time interval.

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“…Leisey (8) titrated mercaptans coulometrically in light petroleum stocks. An amperometric silver titration of mercaptans in hydrocarbons has been reported (4). Recently Kunkel, Buckley, and Gorin (7) determined alkanethiols in hydrocarbons using silver ion and dithizone.…”

mentioning

confidence: 98%