{"id":1068,"date":"2025-09-29T19:07:26","date_gmt":"2025-09-29T10:07:26","guid":{"rendered":"https:\/\/jaast.jp\/?p=1068"},"modified":"2025-10-05T10:19:10","modified_gmt":"2025-10-05T01:19:10","slug":"jaast-journal-article-the-toxic-fingerprint-vol-40-no-3-%e6%af%92%e6%80%a7%e3%81%ae%e5%8c%96%e5%ad%a6%e7%9a%84%e7%97%95%e8%b7%a1","status":"publish","type":"post","link":"https:\/\/jaast.jp\/?p=1068","title":{"rendered":"Research Paper: The Toxic Fingerprint (2025) \u6bd2\u6027\u306e\u5316\u5b66\u7684\u75d5\u8de1"},"content":{"rendered":"\n

\u672c\u8a18\u4e8b\u306fAI\u306b\u3088\u308b\u8981\u7d04\u3067\u3059\u3002\u304a\u6c17\u3065\u304d\u306e\u70b9\u304c\u3042\u308c\u3070Leave a Reply\u306b\u3054\u610f\u898b\u304f\u3060\u3055\u3044<\/sup><\/sub><\/p>\n\n\n\n

Full article: 10.11203\/jar.40.164<\/a><\/p>\n\n\n\n

\u6bd2\u6027\u306e\u5316\u5b66\u7684\u75d5\u8de1\uff1a\u5358\u4e00\u7c92\u5b50\u5206\u6790\u304c\u660e\u3089\u304b\u306b\u3057\u305f\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u6df7\u5165\u30d0\u30a4\u30aa\u30de\u30b9\u71c3\u713c\u304b\u3089\u306e\u6709\u5bb3\u7164<\/strong><\/h3>\n\n\n\n

\u73fe\u72b6\u306e\u8ab2\u984c:<\/strong> \u7a32\u308f\u3089\u306a\u3069\u306e\u8fb2\u696d\u6b8b\u6e23\u306e\u91ce\u713c\u304d\u306f\u3001\u5927\u6c17\u6c5a\u67d3\u6e90\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u71c3\u713c\u6642\u306b\u5ec3\u68c4\u30d7\u30e9\u30b9\u30c1\u30c3\u30af<\/strong>\uff08PE\u3001PS\u3001PET\uff09\u304c\u983b\u7e41\u306b\u6df7\u5165\u3059\u308b\u3068\u3044\u3046\u73fe\u5b9f\u304c\u554f\u984c\u3092\u8907\u96d1\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6df7\u5408\u71c3\u713c\u306f\u3001\u5358\u306b\u7159\u3092\u5897\u3084\u3059\u3060\u3051\u3067\u306a\u304f\u3001\u767a\u751f\u3059\u308b\u6c5a\u67d3\u7269\u8cea\u306e\u6bd2\u6027\u3092\u6839\u672c\u304b\u3089\u5909\u3048\u3066\u3057\u307e\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n

\u300e\u30a8\u30a2\u30ed\u30be\u30eb\u7814\u7a76\u300f\u306b\u63b2\u8f09\u3055\u308c\u305f\u9ed2\u571f\u3089\u306b\u3088\u308b\u91cd\u8981\u306a\u65b0\u8ad6\u6587\u306f\u3001\u3053\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u5316\u5b66\u7684\u306b\u9065\u304b\u306b\u5371\u967a<\/strong>\u3067\u3042\u308b\u3053\u3068\u3092\u660e\u3089\u304b\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u4e0d\u5b8c\u5168\u71c3\u713c\u304c\u5f15\u304d\u8d77\u3053\u3059\u5316\u5b66\u7269\u8cea\u306e\u6025\u5897<\/strong><\/h4>\n\n\n\n

\u7814\u7a76\u30c1\u30fc\u30e0\u306f\u5b9f\u9a13\u7089\u3067\u71c3\u713c\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u306e\u6df7\u5408\u304c\u4e8c\u3064\u306e\u4e3b\u8981\u306a\u5909\u5316\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

    \n
  1. \u6709\u5bb3\u7269\u8cea\u306e\u5897\u5e45:<\/strong> \u5168\u7c92\u5b50\u72b6\u7269\u8cea\uff08PM\uff09\u304c\u5897\u52a0\u3057\u305f\u3060\u3051\u3067\u306a\u304f\u3001\u74b0\u5883\u4e0a\u3001\u6bd2\u6027\u5b66\u4e0a\u3001\u91cd\u5927\u306a\u61f8\u5ff5<\/strong>\u3068\u3055\u308c\u308b5\u74b0\u30dd\u30ea\u30b5\u30a4\u30af\u30ea\u30c3\u30af\u30fb\u30a2\u30ed\u30de\u30c6\u30a3\u30c3\u30af\u30fb\u30cf\u30a4\u30c9\u30ed\u30ab\u30fc\u30dc\u30f3\uff08PAH\uff09\u304c\u6025\u5897\u3057\u307e\u3057\u305f\u3002<\/li>\n\n\n\n
  2. \u71c3\u713c\u306e\u4e0d\u5168:<\/strong> \u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u306e\u6df7\u5165\u306b\u3088\u308a\u3001\u71c3\u713c\u306f\u4f4e\u6e29\u3067\u9178\u7d20\u304c\u4e0d\u8db3\u3057\u305f\u71fb\u713c\uff08\u304f\u3059\u3076\u308a\u71c3\u713c\uff09\u3078\u3068\u79fb\u884c\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u975e\u52b9\u7387\u306a\u30d7\u30ed\u30bb\u30b9\u304c\u3001\u5927\u91cf\u306e\u6709\u6a5f\u30ac\u30b9\u3092\u653e\u51fa\u3057\u3001\u51b7\u5374\u6642\u306b\u51dd\u7e2e\u3057\u3066\u6709\u5bb3\u306a\u5fae\u5c0fPM\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n

    \u5fae\u7d30\u306a\u8a3c\u62e0\uff1a\u9ad8C\/O\u6bd4\u306e\u7164\u7c92\u5b50<\/strong><\/h4>\n\n\n\n

    \u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u79d1\u5b66\u7684\u306b\u691c\u8a3c\u3059\u308b\u305f\u3081\u3001\u30c1\u30fc\u30e0\u306fTEM-EDS<\/strong>\u3092\u7528\u3044\u305f\u5358\u4e00\u7c92\u5b50\u5206\u6790<\/strong>\u3092\u5b9f\u65bd\u3057\u3001\u6c5a\u67d3\u7269\u8cea\u306e\u5316\u5b66\u7684\u75d5\u8de1\u3092\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

    \u6df7\u5408\u71c3\u713c\u3067\u751f\u6210\u3055\u308c\u305f\u7c92\u5b50\u306f\u3001\u9ad8\u70ad\u7d20\u30fb\u4f4e\u9178\u7d20\uff08C\/O\u6bd4\u304c\u9ad8\u3044\uff09\u3068\u3044\u3046\u72ec\u81ea\u306e\u5316\u5b66\u7684\u7279\u5fb4\u3092\u983b\u7e41\u306b\u793a\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u4e0d\u5b8c\u5168\u71c3\u713c\u306e\u76f4\u63a5\u7684\u306a\u7523\u7269\u3067\u3042\u308b\u3001\u65b0\u3057\u3044\u9ad8\u70ad\u7d20\u8cea\u306e\u7164\u72b6\u30fb\u30bf\u30fc\u30eb\u72b6<\/strong>\u7c92\u5b50\u304c\u5f62\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u660e\u78ba\u306b\u88cf\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

    \u56f37<\/strong>\uff08\u9ad8C\/O\u6bd4\u7c92\u5b50\u306eTEM\u753b\u50cf\u3068C\/O\u6bd4\u5206\u5e03\uff09\u306b\u793a\u3055\u308c\u308b\u3053\u306e\u9ad8C\/O\u6bd4\u306f\u3001\u30bd\u30fc\u30b9\u30a2\u30dd\u30fc\u30b7\u30e7\u30e1\u30f3\u30c8\uff08\u767a\u751f\u6e90\u5bc4\u4e0e\uff09\u30e2\u30c7\u30eb<\/strong>\u306b\u304a\u3044\u3066\u3001\u3088\u308a\u300c\u30af\u30ea\u30fc\u30f3\u306a\u300d\u30d0\u30a4\u30aa\u30de\u30b9\u7159\u3068\u3001\u3053\u306e\u6975\u3081\u3066\u6bd2\u6027\u306e\u9ad8\u3044\u6df7\u5408\u5ec3\u68c4\u7269\u71c3\u713c<\/strong>\u304b\u3089\u306e\u30a8\u30a2\u30ed\u30be\u30eb\u3092\u8b58\u5225\u3059\u308b\u305f\u3081\u306e\u4fe1\u983c\u3067\u304d\u308b\u30c8\u30ec\u30fc\u30b5\u30fc\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u8ad6\u6587\u306f\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u306e\u5ec3\u68c4\u7269\u7ba1\u7406\u3068\u5927\u6c17\u8cea\u653f\u7b56\u306e\u6539\u5584\u306b\u5411\u3051\u305f\u91cd\u8981\u306a\u79d1\u5b66\u7684\u6839\u62e0\u3092\u63d0\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

    \n\n\n\n

    <\/h3>\n\n\n
    \n
    \"\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u6df7\u5408\u71c3\u713c\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u305f\u5358\u4e00\u7c92\u5b50\u306f\u3001\u9ad8\u70ad\u7d20\u8cea\u306e\u9ad8C\/O\u6bd4\u3092\u793a\u3059\u3053\u3068\u304c\u5224\u660e\u3002Single-particle
    \u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u6df7\u5408\u71c3\u713c\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u305f\u5358\u4e00\u7c92\u5b50\u306f\u3001\u9ad8\u70ad\u7d20\u8cea\u306e\u9ad8C\/O\u6bd4<\/strong>\u3092\u793a\u3059\u3053\u3068\u304c\u5224\u660e\u3002\u3053\u308c\u306f\u3001\u4e0d\u5b8c\u5168\u306a\u71fb\u713c\u306b\u3088\u3063\u3066\u30bf\u30fc\u30eb\u72b6\u30fb\u7164\u72b6\u306e\u6709\u5bb3\u7c92\u5b50\u304c\u751f\u6210\u3057\u3066\u3044\u308b\u660e\u78ba\u306a\u8a3c\u62e0\u3067\u3042\u308b\u3002Single-particle analysis of mixed plastic combustion aerosols revealed frequent particles with a high C\/O ratio<\/strong>, a chemical fingerprint confirming the formation of hazardous tar-like\/soot-like particles from incomplete smoldering.<\/figcaption><\/figure>\n<\/div>\n\n\n
    \n\n\n\n

    Full article: 10.11203\/jar.40.164<\/a><\/p>\n\n\n\n

    The High Cost of Mixed Burning: Single-Particle Analysis Unveils Hazardous Soot from Plastic-Contaminated Biomass<\/strong><\/h3>\n\n\n\n

    The Environmental Challenge:<\/strong> <\/p>\n\n\n\n

    Open field burning of agricultural residues, like rice straw, is a recognized air pollution source. However, a critical real-world complication is the frequent presence of unauthorized plastic waste<\/strong> (PE, PS, PET) in these burn piles. Does this mixture simply create more smoke, or is the resulting pollution fundamentally different and more hazardous?<\/p>\n\n\n\n

    A new paper in Earozoru Kenkyu<\/em> (Aerosol Research) by Kurotsuchi et al. confirms that the combination is far more dangerous chemically.<\/p>\n\n\n\n

    A Chemical Surge from Inefficient Smoldering<\/strong><\/h4>\n\n\n\n

    The researchers used a lab-scale furnace to simulate open burning. They found that mixing plastics did two key things:<\/p>\n\n\n\n

      \n
    1. Chemical Amplification:<\/strong> It caused a significant increase in total particulate matter (PM) and, critically, a sharp rise in five-ring Polycyclic Aromatic Hydrocarbons (PAHs)<\/strong>\u2014compounds of major environmental and toxicological concern<\/strong>.<\/li>\n\n\n\n
    2. Combustion Failure:<\/strong> The plastics forced the burn into a lower-temperature, oxygen-starved smoldering<\/strong> mode. This inefficient process generates a massive amount of gaseous organic precursors that rapidly condense into fine PM.<\/li>\n<\/ol>\n\n\n\n

      The Microscopic Evidence: High C\/O Soot<\/strong><\/h4>\n\n\n\n

      To scientifically prove this mechanism, the team used single-particle analysis<\/strong> with TEM-EDS<\/strong>. This provided a chemical fingerprint of the toxic outcome.<\/p>\n\n\n\n

      The particles from the mixed burn frequently showed a significantly high Carbon-to-Oxygen (C\/O) ratio<\/strong>. This profile confirms the formation of new, highly carbonaceous, soot-like and tar-like<\/strong> particles\u2014the direct, harmful products of incomplete combustion.<\/p>\n\n\n\n

      As illustrated in Figure 7<\/strong>, this high C\/O ratio is a clear tracer. For air quality scientists, this means TEM-EDS analysis may be a valuable tool to accurately distinguish between ‘cleaner’ biomass smoke and the far more toxic aerosol from mixed-waste burning<\/strong> in source apportionment models. The findings underscore an urgent need for better waste segregation policies.<\/p>\n\n\n\n

      \n\n\n\n
      \u30bf\u30a4\u30c8\u30eb<\/strong><\/td>\u30d0\u30a4\u30aa\u30de\u30b9\u71c3\u713c\u6642\u306e\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u6df7\u5408\u306b\u3088\u308b PM \u5316\u5b66\u7d44\u6210\u3078\u306e\u5f71\u97ff<\/td><\/tr>
      Title<\/strong><\/td>Effect of Mixing Plastics during Biomass Combustion on the Chemical Composition of PM<\/td><\/tr>
      \u8457\u8005<\/strong><\/td>\u9ed2\u571f\u512a\u592a\u30fb\u95a2\u53e3 \u548c\u5f66\u30fb\u83c5\u539f \u5f18\u8cb4\u30fb\u85e4\u8c37 \u96c4\u4e8c\u30fb\u4e09\u5c0f\u7530\u61b2\u53f2<\/td><\/tr>
      \u63b2\u8f09\u8a8c<\/strong><\/td>\u30a8\u30a2\u30ed\u30be\u30eb\u7814\u7a76 (Earozoru Kenkyu), Vol. 40, No. 3, pp. 164-171 (2025)<\/td><\/tr>
      DOI<\/strong><\/td>10.11203\/jar.40.164<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
      \n
      \"\"<\/figure>\n<\/div>\n\n\n

      <\/p>\n\n\n\n

      AI (Gemini 2.5) \u306b\u3088\u308b\u8981\u7d04<\/p>\n\n\n\n

      \n
      \u300c\u30a8\u30a2\u30ed\u30be\u30eb\u7814\u7a76\u300d40\u5dfb3\u53f7\u767a\u884c Publication of “Earozoru Kenkyu” Vol. 40, No. 3<\/a><\/blockquote>