The Use of a Combination of Atom and Ion Lines as Internal Standards in General Spectrochemical Analysis

Tymchuk, P.; Russell, D. S.; Berman, S. S.

doi:10.1366/000370263789620935

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…Ovechkin (368) and Dennen and Sankaran (102) described methods of measuring the temperature of the excitation source and applying corrections to the measured intensity ratios according to the changes in the temperature from one exposure to the next. Tymchuk, Russell, and Berman (504) reported their experience with the use of combinations of lines as internal standards.…”

Section: Standards and Calibrationmentioning

confidence: 99%

Emission Spectrometry.

Scribner¹,

Margoshes²

1964

Anal. Chem.

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This review, the eighth in a series on emission spectrometry, covers the period 1962 through December 1963 with some material that appeared in 1961. The review for the preceding period had been divided into three separate sections: emission spectrometry (441), emission flame photometry (305), and absorption flame photometry (159). These topics are treated together in this review and the discussions on flame photometry and atomic absorption spectroscopy are located toward the end of the review. Following the plan of earlier reviews, attention has been given to contribution of basic importance or applications that are new, unique, or extensive. The 565 references cited represent about one quarter of the publications treating of analytical emission spectrometry which appeared

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Section: Standards and Calibrationmentioning

confidence: 99%

Emission Spectrometry.

Scribner¹,

Margoshes²

1964

Anal. Chem.

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Effect of potassium ferrocyanide on the chemical composition of molasses mash used in the citric acid fermentation

Clark

Ito

Tymchuk

1965

Biotech & Bioengineering

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SummaryThe addition of potassiiim ferrocyanide to the molasses substrate (mash) used in the citric acid fermentation had little or no effect on the total carbon, nitrogen, or phosphorus content of the substrate but reduced the ash content by 1-4% depending on the type and crop year of molasses. Eighteen of the 21 metals identified in beet molasses by spectrographic analysis were precipitated in part by the f,reatment. The metals known to interfere with citric acid production, particularly manganese and iron, were those most efficiently precipitated. At mash temperatures of 80°C. and approximately 100°C., precipitation was completed within 15 min. after ferrocyanide addition and the reductions in the soluble mineral content in each case were similar. At 25OC. the precipitation reactions occurred but required more than 50 hr. to complete. Significantly more total mineral and more iron, calcium, and copper were precipitated at pHs 4 and 6 than at pH 8; manganese precipitation, however, was not affected by these pH changes.

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