{"id":5446,"date":"2026-04-15T06:18:22","date_gmt":"2026-04-15T10:18:22","guid":{"rendered":"https:\/\/laboratorytesting.com\/?page_id=5446"},"modified":"2026-04-15T06:25:46","modified_gmt":"2026-04-15T10:25:46","slug":"explanation-of-reporting-limit-for-paint-chips","status":"publish","type":"page","link":"https:\/\/laboratorytesting.com\/pt\/resources\/lead\/explanation-of-reporting-limit-for-paint-chips\/","title":{"rendered":"Explica\u00e7\u00e3o do limite de notifica\u00e7\u00e3o para lascas de tinta"},"content":{"rendered":"
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Explica\u00e7\u00e3o do limite de notifica\u00e7\u00e3o para lascas de tinta<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Por Jeffrey W. Siria, MS, Ph.D., Diretor Nacional de Qu\u00edmica Inorg\u00e2nica da EMSL Analytical, Inc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Resumo do briefing<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Este breve documento explica como o laborat\u00f3rio pode alcan\u00e7ar um limite de notifica\u00e7\u00e3o (RL)<\/strong> t\u00e3o baixo quanto 0,008% em peso (80 ppm) para chumbo em lascas de tinta usando FLAA ou significativamente menor por ICP-OES. O RL \u00e9 a concentra\u00e7\u00e3o que, abaixo desse limite, n\u00e3o \u00e9 estatisticamente quantific\u00e1vel e, portanto, \u00e9 relatada como menor que (\u201c<\u201d). O RL n\u00e3o \u00e9 o mesmo que o limite de detec\u00e7\u00e3o do m\u00e9todo (MDL), um limite estat\u00edstico de detec\u00e7\u00e3o<\/span> onde RL \u00e9 um limite estat\u00edstico de confiabilidade quantifica\u00e7\u00e3o<\/span>.<\/p>

O RL \u00e9 inversamente proporcional ao peso da amostra. No entanto, a quantidade de amostra submetida est\u00e1 fora do controle do laborat\u00f3rio. A tabela a seguir fornece exemplos de limites de detec\u00e7\u00e3o para chumbo em lascas de tinta em fun\u00e7\u00e3o do peso da amostra, tanto para FLAA quanto para ICP-OES.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Peso da amostra<\/th>Limite de notifica\u00e7\u00e3o de chumbo, FLAA<\/th>Limite de notifica\u00e7\u00e3o de chumbo, ICP-OES<\/th>\n<\/tr>\n<\/thead>\n
0,25 gramas (250 mg)*<\/td>80 mg\/kg (ppm), 0,008% em peso.<\/td>4 mg\/kg (ppm), 0,0004% em peso.<\/td>\n<\/tr>\n
0,10 gramas (100 mg)<\/td>200 mg\/kg (ppm), 0,020% em peso.<\/td>10 mg\/kg (ppm), 0,0010% em peso.<\/td>\n<\/tr>\n
0,02 gramas (20 mg)**<\/td>1000 mg\/kg (ppm), 0,10% em peso.<\/td>50 mg\/kg (ppm), 0,0050% em peso.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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* Os limites de detec\u00e7\u00e3o n\u00e3o ser\u00e3o inferiores a 250 mg de amostra.
** 20 mg \u00e9 o peso m\u00ednimo aceit\u00e1vel para an\u00e1lise por FLAA ou ICP-OES.<\/p>

C\u00e1lculos semelhantes se aplicam a outros metais analisados por ICP-OES (c\u00e1dmio ou cromo apenas se por FLAA), embora o limite de detec\u00e7\u00e3o possa ser maior ou menor do que o do chumbo, dependendo do analito.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Explanation of Reporting Limit for Paint Chips By Jeffrey W. Siria, M.S., Ph.D., National Director of Inorganic Chemistry, EMSL Analytical, Inc. Summary of Brief This brief explains how the laboratory can achieve a reporting limit (RL) as low as 0.008% […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5401,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","footnotes":""},"class_list":["post-5446","page","type-page","status-publish","hentry","slug-explanation-of-reporting-limit-for-paint-chips","even_post_id"],"_links":{"self":[{"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/pages\/5446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/comments?post=5446"}],"version-history":[{"count":10,"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/pages\/5446\/revisions"}],"predecessor-version":[{"id":5457,"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/pages\/5446\/revisions\/5457"}],"up":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/pages\/5401"}],"wp:attachment":[{"href":"https:\/\/laboratorytesting.com\/pt\/wp-json\/wp\/v2\/media?parent=5446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}