Statistical evaluation of conventional and portable instrumentations for Cr(VI) analysis on chemistry laboratory waste water

Suherman Suherman, Ghilma Milawonso, Kinichi Morita, Hitoshi Mizuguchi, Yuji Oki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The development of portable instrumentation for heavy metals analysis was increased rapidly. However, the quality of data from portable methods has so far been questioned when compared to conventional instrumentation. In this research, a comparative study of conventional and portable instrumentations for Cr(VI) analysis on liquid waste water of Chemistry Laboratory at Universitas Gadjah Mada (UGM) was conducted. This research started with validation and statistical evaluation of instrumentation methods which are UV-Visible spectrophotometer, portable spectrophotometer (PiCOEXPLORER) and Inductively Coupled Plasma Atomic Emission Spectrometer (ICP-AES). The validation methods consist of determination of linearity, sensitivity, limit of detection and limit of quantification. The results showed that the validation methods of ICPAES were better than PiCOEXPLORER and UV-Vis spectrophotometer. Based on t-test, it was obtained that the result of Cr(VI) analyses with the comparison of UV-Vis and PiCOEXPLORER, ICP-AES and PiCOEXPLORER, and UV-Vis and ICP-AES; there were no significant difference (tcount< ttable). The ANOVA test (F test) results showed that the Fcount value is less than Ftable so that the results of Cr(VI) analysis in the standard solution and liquid waste samples measured by three instrumentations. Thus, it was concluded that portable instrumentations was good and gives the same quality as conventional instrumentations (UV-Vis and ICP AES).

Original languageEnglish
Title of host publicationSymposium of Materials Science and Chemistry II
EditorsTutik Dwi Wahyuningsih, Roto Roto, Dwi Siswanta, Rohana Adnan, Laurent Commeiras, Kuwat Triyana, Kuwat Triyana, Indriana Kartini, Julius Motuzas
PublisherTrans Tech Publications Ltd
Pages406-411
Number of pages6
ISBN (Print)9783035716139
Publication statusPublished - 2020
Event5th International Conference on Science and Technology, ICST 2019 - Yogyakarta, Indonesia
Duration: Jul 30 2019Jul 31 2019

Publication series

NameKey Engineering Materials
Volume840 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference5th International Conference on Science and Technology, ICST 2019
CountryIndonesia
CityYogyakarta
Period7/30/197/31/19

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Suherman, S., Milawonso, G., Morita, K., Mizuguchi, H., & Oki, Y. (2020). Statistical evaluation of conventional and portable instrumentations for Cr(VI) analysis on chemistry laboratory waste water. In T. D. Wahyuningsih, R. Roto, D. Siswanta, R. Adnan, L. Commeiras, K. Triyana, K. Triyana, I. Kartini, & J. Motuzas (Eds.), Symposium of Materials Science and Chemistry II (pp. 406-411). (Key Engineering Materials; Vol. 840 KEM). Trans Tech Publications Ltd.