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Nonsolvent quantitation of anionic surfactants and inorganic ingredients in laundry detergent products

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Journal of the American Oil Chemists' Society

Abstract

This paper reports the development of a method for measuring alkylbenzene sulfonates and alkyl sulfates (AS) without requiring the use of chlorinated organic solvents, such as chloroform. Alkylbenzene sulfonates and AS are precipitated with calcium and then isolated by filtration. Through this filtration process, they are separated from inorganic sulfur compounds. After the precipitate is prepared, the level of sulfur is measured by inductively coupled plasma atomic emission spectrometry (ICP-AES) to determine the total anionic surfactant level. Separately, AS are hydrolyzed in an autoclave, and the level of alkylbenzene sulfonates is then measured in the same manner. By using the autoclave, a safe and rapid hydrolysis step has been achieved. In addition to alkylbenzene sulfonates and AS, phosphate, silicate, sulfate, and zeolite can be determined with this sample preparation. This sample preparation procedure was investigated by ICP-AES and was confirmed applicable for simultaneous measurements of alkylbenzene sulfonates, AS, phosphate, silicate, sulfate, and zeolite without using organic solvents. Relative standard deviation for the analysis is less than 1.7%, recovery is more than 99.0%, and the calibration curve gives a correlation coefficient of R=1.000. The detection limit of this method for alkylbenzene sulfonates and AS is 0.6%, for zeolite, 0.04%, for phosphate, 0.4%, for silicate, 0.1%, and for sulfate, 0.2%, by weight in product. This method is applicable to various laundry detergent products that contain the materials mentioned above and is 10 times faster than the six wet chemical methods normally used to analyze these compounds.

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References

  1. Hartley, G.S., The Solvent Properties of Aqueous Solutions of Paraffin-Chain Salts Part I. The Solubility of trans-Azobenzene in Solutions of Cetyl-Pyridinium Salts, J. Chem. Soc.:1968–1975 (1938).

  2. Hartley, G.S., and D.F. Runnicles, The Determination of the Size of Paraffin-Chain Salt Micelles from Diffusion Measurements, Proc. Roy. Soc. A. 168:420–440 (1938).

    Google Scholar 

  3. Jones, J.H., General Colorimetric Method for Determination of Small Quantities of Sulfonated or Sulfated Surface-Active Compounds, J. Assoc. Official Agr. Chem. 28:398–409 (1945).

    CAS  Google Scholar 

  4. Epton, S.R., A Rapid Method of Analysis for Certain Surface-Active Agents, Nature 160:795–796 (1947).

    CAS  Google Scholar 

  5. Epton, S.R., A New Method for the Rapid Titrimetric Analysis of Sodium Alkyl Sulphates and Related Compounds, Trans. Faraday Soc. 44:226–230 (1948).

    Article  CAS  Google Scholar 

  6. Weatherburn, A.S., A Modified Method for the Determination of Anionic Surface Active Compounds, J. Am. Oil Chem. Soc. 28:233–235 (1951).

    CAS  Google Scholar 

  7. Reid, V.W., G.F. Longman, and E. Heinerth, Determination of Anionic-Active Detergents by Two-Phase Titration, Tenside 4:292–304 (1967).

    CAS  Google Scholar 

  8. Bareš, M., Two-Phase Titration of Soap in Detergents, Ibid.:312–316 (1969).

    Google Scholar 

  9. Kariyone, T., Kaimenkasseizai Bunsekiho, edited by Kaimenkasseizai Bunseki Kenkyu-kai, Saiwai Shobo, Tokyo, 1987.

    Google Scholar 

  10. Kaimenkasseizai Handbook, edited by T. Yoshida, S. Shindo, T. Ohgaki, and K. Yamanaka, Kogaku Tosho, Tokyo, 1987.

    Google Scholar 

  11. Hasegawa, A., M. Yamanaka, K. Tsuji, and S. Tamura, Automatic Photometric Titration of Surface-Active Agents Based on Two-Phase Titration I. Determination of Anionic Sufactants by Direct Titration, Bunseki Kagaku 31:508–513 (1982).

    CAS  Google Scholar 

  12. General Guidebook on Industrial Health, edited by Rodo-kijunkyoku of The Ministry of Labor, Chuo Roudou-saigai-boushi Kyokai, 1995, p. 89.

  13. Sax, N.I., Dangerous Properties of Industrial Materials, 5th edn., Van Nostrand Reinhold Company, 1979, p. 493.

  14. Taguchi, S., and K. Goto, Bis[2-(2-Pyridylazo)-5-diethylaminophenolato]cobalt(III) Chloride as a New Extraction and Spectrophotometric Reagent for Trace Anions, Talanta 27:289–291 (1980).

    Article  CAS  Google Scholar 

  15. Taguchi, S., I. Kasahara, Y. Fukushima, and K. Goto, An Application of Bis[2-(5-cholro-2-pyridylazo)-5-diethylaminophenolato]cobalt(III) Chloride to the Extraction and Spectrophotometric Determination of Sulphonated and Sulphated Surfactants. Ibid.:616–618 (1981).

    Article  CAS  Google Scholar 

  16. Rubio-Barroso, S., V. Rodriguez-Gamonal, and L.M. Polo-Diez, Fluorometric Determination of Anionic Surfactants by Extraction as Safranine-T Ion-Pairs, Anal. Chim. Acta 206:351–355 (1988).

    Article  CAS  Google Scholar 

  17. Rubio-Barroso, S., V. Rodriguez-Gamonal, and L.M. Polo-Diez, Fluorometric Determination of Anionic Surfactants by Extraction as the Rhodamine-B Ion Pair, Microchem. J. 37:93–98 (1988).

    Article  CAS  Google Scholar 

  18. Kasahara, I., M. Kanai, M. Taniguchi, A. Kakeba, N. Hata, S. Taguchi, and K. Goto, Bis[2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulphopropylamino)phenolato]cobaltate(III) as a Counter Ion for the Extraction and Spectrophotometric Determination of Long-Chain Quaternary Ammonium Salts and Tertiary Alkylamines in the Presence of Each Other, Anal. Chim. Acta 219:239–245 (1989).

    Article  CAS  Google Scholar 

  19. Endoh, H., M. Ozaki, and Y. Kondoh, Simultaneous Determination of Inorganic Builders in Powder Detergents by Inductively Coupled Plasma Atomic Emission Spectrometry, J. Jpn. Oil Chem. Soc. 42:507–512 (1993).

    CAS  Google Scholar 

  20. Kawauchi, A., and M. Ishida, Measurement of Zeolite, Silicate. and Phosphate in Laundry Detergent Products by Inductively Coupled Plasma Atomic Emission Spectrometry, J. Am. Oil Chem. Soc. 73:131–135 (1996).

    Article  CAS  Google Scholar 

  21. Japanese Industrial Standard (JIS) K3362, Testing Method for Synthetic Detergent, Japanese Standard Committee, Tokyo, 1990.

  22. Ogura, I., D.L. DuVal, S. Kawakami, and K. Miyajima, Identification and Quantitation of Surfactants in Consumer Products by Ion-Spray Mass Spectrometry, J. Am. Oil Chem. Soc. 73:137–142 (1996).

    Article  CAS  Google Scholar 

  23. International Standard (ISO) 2870. Surface-Active Agents—Detergents—Determination of Anionic-Active Matter Hydrolyzable and Non-Hydrolyzable Under Acid Conditions, International Organization for Standardization, Switzerland, 1986.

    Google Scholar 

  24. Miller, J.C., and J.N. Miller, Statistics for Analytical Chemistry, Japanese version, Kyoritsu-chuppan, Tokyo, 1991, pp. 114–117.

    Google Scholar 

  25. International Standard (ISO) 2271, Surface-Active Agents—Detergents—Determination of Anionic-Active Matter by Manual or Mechanical Direct Two-Phase Titration Procedure, International Organization for Standardization, Switzerland, 1989.

    Google Scholar 

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  1. Procter & Gamble Asia, Research and Development Department, Kobe Technical Center, 17, Koyo-cho, Naka 1-chome, Higashinada, 658, Kobe, Japan

    Akihiko Kawauchi

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  1. Akihiko Kawauchi
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Correspondence to Akihiko Kawauchi.

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Kawauchi, A. Nonsolvent quantitation of anionic surfactants and inorganic ingredients in laundry detergent products. J Amer Oil Chem Soc 74, 787–792 (1997). https://doi.org/10.1007/s11746-997-0219-5

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  • DOI: https://doi.org/10.1007/s11746-997-0219-5

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