{"version":"1.0","provider_name":"\u898f\u683c\u30de\u30b9\u30bf\u30fc","provider_url":"https:\/\/kikakumaster.com\/ja\/","author_name":"KikakuAdmin000","author_url":"https:\/\/kikakumaster.com\/ja\/author\/kikakuadmin000\/","title":"AWS LVOS - LABORATORY VALIDATION OF OZONE SAMPLING WITH SPILL PROOF IMPINGERS - \u898f\u683c\u30de\u30b9\u30bf\u30fc","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"YEAb1McUx8\"><a href=\"https:\/\/kikakumaster.com\/ja\/aws\/aws-aws-lvos\/\">AWS LVOS &#8211; LABORATORY VALIDATION OF OZONE SAMPLING WITH SPILL PROOF IMPINGERS<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/kikakumaster.com\/ja\/aws\/aws-aws-lvos\/embed\/#?secret=YEAb1McUx8\" width=\"600\" height=\"338\" title=\"&#8220;AWS LVOS &#8211; LABORATORY VALIDATION OF OZONE SAMPLING WITH SPILL PROOF IMPINGERS&#8221; &#8212; \u898f\u683c\u30de\u30b9\u30bf\u30fc\" data-secret=\"YEAb1McUx8\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/kikakumaster.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"This report describes the adaptation of an existing air sampling and analytical method for ozone to the personal monitoring of employee exposures to the substance inside a welding helmet. The Saltzman iodometric method was modified to accommodate helmet sampling. The personal air sampler that was developed consists of a Teflon filter in a polystyrene holder joined with flexible tubing to a spill-proof impinger containing an alkaline potassium iodide solution. The sampler is compatible with a personal sampling pump capable of an air flow rate of 2.0 L\/min. The overall method was evaluated in the laboratory with 110-L test atmosphere samples at an ozone concentration of about 0.1 ppm (0.2 mg\/ m3 at 25\u00c2\u00b0 C) and with =40-L test atmosphere samples over the concentration range of 0.3 to 5.1 ppm (0.6 to 10mg\/m3at25\u00c2\u00b0 C). The average bias relative to an independent sampling method was about -10% for determinations near 0.1 ppm and about +7% for determinations in the range of 0.3 to 5.1 ppm. The relative standard deviation at 0.1 ppm was 6.6% and the pooled relative standard deviation for concentrations in the range of 0.3 to 5.1 ppm was 7.7%. Field tests of the method were not as successful. The ozone concentrations determined with the developed method were much lower than those simultaneously determined with a chemiluminescent monitor and those determined by another iodometric impinger method, the boric acid\/ potassium iodide method. Loss of ozone as a result of reaction with welding fume present in the air samples or as a result of the catalysis of other reactions of ozone by the fume may have contributed to the observed discrepancies. A tentative personal sampling and analytical method was recommended based on the boric acid\/potassium iodide procedure. ISBN 0-87171-224-5"}