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style="display:none"> <ul class="two_profl"> <li><a href="/SonList-2524160.html" title="超聲波硬度計(jì)">超聲波硬度計(jì)</a></li> <li><a href="/SonList-2524159.html" title="里氏硬度計(jì)">里氏硬度計(jì)</a></li> </ul> </div> </li> </ul> </div> </div> <div id="555b3jz" class="nymiddlezty"> <div id="dvfpzrv" class="mianbao">您現(xiàn)在的位置：<a href="/">首頁</a> >> <a href="/article.html">技術(shù)文章</a> >> 很多人不知道負(fù)氧離子是什么</div> <div id="ldzltjd" class="about_con"> <div id="53bbl3z" class="newstit">很多人不知道負(fù)氧離子是什么</div> <div id="5ztbvz3" class="newstime"> <span id="f5fp3hl" class="skim"><em>瀏覽次數(shù)：</em>2002</span><span id="tnzlj5p" class="skimtim"><em>發(fā)布日期：</em>2020-04-08 </span> </div> 　 <strong>負(fù)氧離子</strong>：<div>　　空氣負(fù)氧離子是帶負(fù)電荷的單個(gè)氣體分子和輕離子團(tuán)的總稱。</div><div>　　負(fù)氧離子濃度：</div><div>　　監(jiān)測設(shè)備的離子遷移率≥0.4cm2/(V?S)時(shí)所測定的空氣離子濃度為負(fù)(氧)離子濃度，單位以“個(gè)/cm3表示”</div><div>　　負(fù)（氧）離子濃度等級：</div><div>　　為了指示空氣清新程度，按照一定的濃度差異，將空氣負(fù)(氧)離子濃度劃分為不同的等級。</div><div>　　空氣是混合物，由多種分子構(gòu)成，由于自然界的宇宙射線、紫外線、土壤和空氣放射線的影響，空氣中的有些分子就釋放出電子，陰離子?？諝夥肿釉诟邏夯驈?qiáng)射線的作用下被電離所產(chǎn)生的自由電子大部分被氧氣所獲得，因而，常常把空氣負(fù)離子統(tǒng)稱為“負(fù)氧離子”，負(fù)氧離子帶負(fù)電，它無色無味。<br /> </div><p align="center"><img src="http://img65.chem17.com/9/20200408/637219368130808669557.jpg" alt="負(fù)氧離子檢測儀" width="800" align="middle" /></p><div>　　空氣的正、負(fù)離子，按其遷移率大小可分為大、中、小離子。對人體有益的是小離子，也稱為輕離子，其具空氣中的生態(tài)級負(fù)離子有良好的生物活性。只有小離子或小離子團(tuán)才能進(jìn)入生物體。</div><div>　　空氣的正、負(fù)離子，按其遷移率大小可分為大、中、小離子。離子遷移率大于0.4cm2/(V?S)為小離子，小于0.4cm2/(V?S)為大離子，介于兩者之間則為中離子。接近分子大小的荷電原子團(tuán)或分子團(tuán)，都屬于小的空氣離子。這些小的空氣離子具有高的運(yùn)動(dòng)速度，在大氣中互相碰撞，又不斷聚集，形成大離子或中離子。只有小離子、或稱之為小離子團(tuán)才能進(jìn)入生物體。而其中的小負(fù)氧離子、或稱之為小負(fù)氧離子團(tuán)，則有良好的生物活性。</div><div>　　離子在單位強(qiáng)度(V/m)電場作用下的移動(dòng)速度稱之為離子遷移率，它是分辨被測離子直徑大小的一個(gè)重要參數(shù)。空氣離子直徑越小，其遷移速度就越快。離子遷移率是表達(dá)被測離子大小的重要參數(shù)。離子運(yùn)動(dòng)速度與離子直徑成反比，而離子遷移率與離子運(yùn)動(dòng)速度成正比，故離子遷移率與離子直徑成負(fù)比。</div> <div class="bfrpz73" id="news_sx"><li id="btpnhzj" class="sx_left">上一篇：<a href="/Article-2174819.html">負(fù)離子濃度檢測儀的一些相關(guān)知識</a> <br />下一篇：<a href="/Article-2136509.html">負(fù)離子檢測儀的特點(diǎn)分享</a></li></div> </div> </div> </div> </div> <div id="xtph5bv" class="clear"></div> <div class="5fzzlbh" id="footer"> <div id="tt553ln" class="footernr"> <div id="b75z5fl" class="footersub1"> 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