The Korea Journal of Herbology (대한본초학회지)

The Korea Association of Herbology (대한본초학회)
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A Study on the Constituents of Pyrolusitum by XRD and XRF

XRD와 XRF를 이용한 무명이(無名異)의 구성 성분 연구

  • Lee, Minwoo (College of Korean Medicine, Gachon University) ;
  • Choi, Goya (Herbal Medicine Research Division, Korea Institute of Oriental Medicine) ;
  • Lee, Young-Jong (College of Korean Medicine, Gachon University)
  • 이민우 (가천대학교 한의과대학) ;
  • 최고야 (한국한의학연구원 한약연구부) ;
  • 이영종 (가천대학교 한의과대학)
  • Received : 2018.10.11
  • Accepted : 2018.11.25
  • Published : 2018.11.30
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Abstract

Objectives: The aim of the study was to analyze the constituents of Pyrolusitum, which was used to eliminate static blood and inflammation, to establish the basis of clinical application. Methods: Qualitative analysis was performed by X-Ray Diffraction (XRD) using the sample as a powder, and the elemental content of granular sample was measured by X-Ray Fluorescence (XRF). 1 M hydrochloric acid and 5% sodium hydroxide aqueous solution were added to observe the changing shape, respectively. Results: Qualitative analysis by XRD revealed that the Pyrolusitum samples used in the study contained quarts and kaolinite. Quantitative analysis by XRF revealed that the manganese content in the samples used in the study was 6.16% on average, while iron was contained the highest amount of 22.99%. The minor constituents include 1.08% of titanium, 0.30% of barium, 0.18% of lead, 0.06% of zirconium, 0.05% of chromium, 0.04% of zinc, 0.03% of cadnium, 0.02% of nickel, 0.01% of arsenic, 0.01% of copper, 0.01% of rubidium, 0.01% of strontium, 0.00% of molybdenum, respectively. And cobalt, which is reported to be a constituent of Pyrolusitum, was not detected at all in the samples of the study. Pyrolusitum was dissolved in dark brown when it was put into 1 M hydrochlorid acid, and there was brown precipitate when sodium hydroxide solution was added to Pyrolusitum and stirred. Conclusions: It was found that manganese and iron were the major constituents of Pyrolusitum, and it could be identified by using concentrated hydrochloric acid and sodium hydroxide solution.

Keywords

DHBCBU_2018_v33n6_87_f0001.tif 이미지

Fig. 1. Representative Photograph of Pyrolusitum

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Fig. 2. X-ray diffraction pattern of Pyrolusitum

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Fig. 3. Pyrolusitum in response to 1 M hydrochloric acid (A) Immediately after the addition of hydrochloric acid (B) After 30 seconds (C) After 1 minute (D) After 2 minutes

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Fig. 4. Pyrolusitum in response to sodium hydroxide solution.

Table 1. Elemental Contents of Pyrolusitum Measured by X-ray Fluorescence Analysis

DHBCBU_2018_v33n6_87_t0001.tif 이미지

Table 2. Average Elemental Contents of Pyrolusitum Measured by X-ray Fluorescence Analysis

DHBCBU_2018_v33n6_87_t0002.tif 이미지

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