1.0規格マスターhttps://kikakumaster.com/ja/KikakuAdmin000https://kikakumaster.com/ja/author/kikakuadmin000/rich600338<blockquote class="wp-embedded-content" data-secret="wXK0tnpSru"><a href="https://kikakumaster.com/ja/aws/aws-aws-lvos/">AWS LVOS – 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=wXK0tnpSru" width="600" height="338" title="“AWS LVOS – LABORATORY VALIDATION OF OZONE SAMPLING WITH SPILL PROOF IMPINGERS” — 規格マスター" data-secret="wXK0tnpSru" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !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); //# sourceURL=https://kikakumaster.com/wp-includes/js/wp-embed.min.js /* ]]> */ </script> 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° C) and with =40-L test atmosphere samples over the concentration range of 0.3 to 5.1 ppm (0.6 to 10mg/m3at25° 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