{"id":4882,"date":"2026-08-13T13:56:27","date_gmt":"2026-08-13T05:56:27","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4882"},"modified":"2026-08-13T13:56:27","modified_gmt":"2026-08-13T05:56:27","slug":"determination-of-lead-in-sodium-pyrophosphate-food-additive","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/ja\/applications\/determination-of-lead-in-sodium-pyrophosphate-food-additive","title":{"rendered":"\u30d4\u30ed\u30ea\u30f3\u9178\u30ca\u30c8\u30ea\u30a6\u30e0\u98df\u54c1\u6dfb\u52a0\u7269\u4e2d\u306e\u925b\u306e\u5b9a\u91cf"},"content":{"rendered":"

1 \u65b9\u6cd5\u6982\u8981<\/b><\/strong><\/h2>\n

\u8a66\u6599\u306e\u524d\u51e6\u7406\u5f8c\u3001\u925b\u30a4\u30aa\u30f3\u306f\u7279\u5b9a\u306epH\u6761\u4ef6\u4e0b\u3067\u30b8\u30a8\u30c1\u30eb\u30b8\u30c1\u30aa\u30ab\u30eb\u30d0\u30df\u30f3\u9178\u30ca\u30c8\u30ea\u30a6\u30e0\uff08DDTC\uff09\u3068\u932f\u4f53\u3092\u5f62\u6210\u3059\u308b\u3002\u3053\u306e\u932f\u4f53\u306f4-\u30e1\u30c1\u30eb-2-\u30da\u30f3\u30bf\u30ce\u30f3\uff08MIBK\uff09\u3092\u7528\u3044\u3066\u62bd\u51fa\u30fb\u5206\u96e2\u3055\u308c\u3001\u539f\u5b50\u5438\u5149\u5206\u5149\u5149\u5ea6\u8a08\u306b\u5c0e\u5165\u3055\u308c\u3066\u30d5\u30ec\u30fc\u30e0\u539f\u5b50\u5316\u3055\u308c\u308b\u3002\u5438\u5149\u5ea6\u306f283.3 nm\u306e\u6ce2\u9577\u3067\u6e2c\u5b9a\u3055\u308c\u308b\u3002\u4e00\u5b9a\u306e\u6fc3\u5ea6\u7bc4\u56f2\u5185\u3067\u306f\u3001\u925b\u306e\u5438\u5149\u5ea6\u306f\u305d\u306e\u8cea\u91cf\u542b\u6709\u91cf\u306b\u6bd4\u4f8b\u3059\u308b\u305f\u3081\u3001\u6a19\u6e96\u8a66\u6599\u3068\u306e\u6bd4\u8f03\u306b\u3088\u3063\u3066\u5b9a\u91cf\u3092\u884c\u3046\u3002<\/p>\n

2 \u9069\u7528\u7bc4\u56f2<\/b><\/strong><\/h2>\n

\u3053\u306e\u65b9\u6cd5\u306f\u3001\u30d4\u30ed\u30ea\u30f3\u9178\u30ca\u30c8\u30ea\u30a6\u30e0\u98df\u54c1\u6dfb\u52a0\u7269\u4e2d\u306e\u925b\u306e\u5b9a\u91cf\u306b\u9069\u7528\u3055\u308c\u308b\u3002<\/p>\n

3 \u53c2\u7167\u6a19\u6e96<\/b><\/strong><\/h2>\n

GB 25557-2010 \u56fd\u5bb6\u98df\u54c1\u5b89\u5168\u898f\u683c \u2013 \u98df\u54c1\u6dfb\u52a0\u7269\u30d4\u30ed\u30ea\u30f3\u9178\u30ca\u30c8\u30ea\u30a6\u30e0\u3001A.10 \u925b\u306e\u6e2c\u5b9a<\/p>\n

4\uff0e\u5668\u5177\u3001\u88c5\u7f6e\u304a\u3088\u3073\u8a66\u85ac<\/b><\/strong><\/h2>\n

4.1\u8a08\u5668\u8a2d\u5099<\/b><\/strong><\/h3>\n

4.1.1 \u5206\u6790\u6a5f\u5668<\/b><\/strong><\/h4>\n

\u30b7\u30fc\u30c8<\/p>\n\n\n\n\n\n\n
\u3044\u3084<\/b><\/strong><\/td>\n\u540d\u524d<\/b><\/strong><\/td>\n\u91cf<\/b><\/strong><\/td>\n\u6280\u8853\u8981\u4ef6<\/b><\/strong><\/td>\n\u30a2\u30af\u30bb\u30b5\u30ea\u30fc<\/b><\/strong><\/td>\n<\/tr>\n
1<\/td>\n\u706b\u7130 \u539f\u5b50 \u5438\u53ce \u5206\u5149 \u5149\u8a08<\/td>\n1\u30bb\u30c3\u30c8<\/td>\n\u2014<\/td>\n\u30ea\u30fc\u30c9\u4e2d\u7a7a\u9670\u6975\u30e9\u30f3\u30d7<\/td>\n<\/tr>\n
2<\/td>\n\u7a7a\u6c17\u5727\u7e2e\u6a5f<\/td>\n1\u30e6\u30cb\u30c3\u30c8<\/td>\n\u8a55\u4fa1\u3055\u308c\u305f\u6392\u6c17\u5727: 0.3 MPa<\/td>\n\u2014<\/td>\n<\/tr>\n
3<\/td>\n\u30a2\u30bb\u30c1\u30ec\u30f3\u30dc\u30f3\u30d9<\/td>\n1\u3064\u306e\u30b7\u30ea\u30f3\u30c0\u30fc<\/td>\n\u7d14\u5ea6 \u2265 99.99%<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

1 Method Overview After sample pretreatment, lead ions form a complex with sodium diethyldithiocarbamate (DDTC) under a specific pH condition. The complex is extracted and separated using 4-methyl-2-pentanone (MIBK), then introduced into an atomic absorption spectrometer for flame atomization. Absorbance is measured at a wavelength of 283.3 nm. Within a certain concentration range, the absorbance of lead is proportional to its mass content, and quantification is performed by comparison with a standard series. 2 Scope of Application This method applies to the determination of lead in sodium pyrophosphate food additive. 3 Reference Standards GB 25557-2010 National Food Safety Standard \u2013 Food Additive Sodium Pyrophosphate, Section A.10 Determination of Lead 4 […]<\/p>\n","protected":false},"author":2,"featured_media":4824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,77],"tags":[],"class_list":["post-4882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-bio-tech-and-life-sciences"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/posts\/4882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/comments?post=4882"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/posts\/4882\/revisions"}],"predecessor-version":[{"id":4883,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/posts\/4882\/revisions\/4883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/media\/4824"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/media?parent=4882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/categories?post=4882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/ja\/wp-json\/wp\/v2\/tags?post=4882"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}