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id="zlbbrnrv" class="NyNewsdetail_tips">更新時(shí)間：2025-05-28 點(diǎn)擊次數：120</div> <div id="zlbbrnrv" class="NyNewsdetail_con"> <div>　　在環(huán)境保護和水質(zhì)監測工作中，準確測定水體中的總氮含量至關(guān)重要，而便攜式總氮水質(zhì)測定儀憑借其便捷性和高效性，成為重要的檢測工具。其工作原理主要基于化學(xué)反應與光學(xué)測量技術(shù)。</div><div>　　<strong><a href="http://wap.rp28538530.com.cn/Products-37376362.html" target="_blank">便攜式總氮水質(zhì)測定儀</a></strong>的檢測過(guò)程始于樣品預處理。將待測水樣進(jìn)行過(guò)濾，去除其中的懸浮顆粒物質(zhì)和固體物質(zhì)，以保證后續反應的準確性和穩定性。這一步驟能避免雜質(zhì)對化學(xué)反應和光學(xué)測量的干擾，使測定結果更可靠。</div><div>　　接下來(lái)是關(guān)鍵的消解處理。通常使用過(guò)硫酸鹽作為氧化劑，在高溫高壓條件下對水樣進(jìn)行處理。例如，在125℃的環(huán)境中，過(guò)硫酸鹽能將水樣中的有機氮和無(wú)機氮，如蛋白質(zhì)、氨基酸、有機胺、硝酸鹽、亞硝酸鹽和銨鹽等，全部氧化轉化為硝酸鹽。這一過(guò)程實(shí)現了不同形態(tài)氮的統一轉化，為后續的定量分析奠定了基礎。</div><div>　　消解結束后，會(huì )加入掩蔽劑去除鹵素類(lèi)氧化物質(zhì)，避免其對后續反應產(chǎn)生干擾。隨后，硝酸鹽與變色酸在強酸性環(huán)境下發(fā)生化學(xué)反應，生成一種黃色絡(luò )合物。這種絡(luò )合物的生成是基于特定的化學(xué)反應機制，其生成量與水樣中的總氮含量存在線(xiàn)性關(guān)系。</div><div>　　光學(xué)測量技術(shù)則用于定量分析生成的絡(luò )合物。儀器內置的光度計利用紫外可見(jiàn)光譜儀對反應后的水樣進(jìn)行光譜分析。通過(guò)測量特定波長(cháng)下絡(luò )合物的吸光度或熒光強度等參數，儀器能根據預先設定的標準曲線(xiàn)，將光信號轉化為總氮含量。以吸光度為例，吸光度與絡(luò )合物濃度成正比，而絡(luò )合物濃度又與總氮含量相關(guān)，因此通過(guò)測量吸光度就能計算出水樣中的總氮含量。</div><div>　　儀器內置的數據處理模塊會(huì )對測量結果進(jìn)行自動(dòng)計算和處理，最終得出總氮含量的數值。同時(shí)，便攜式總氮水質(zhì)測定儀還具備數據存儲、打印等功能，方便用戶(hù)記錄和分析數據。<br /> </div><p style="text-align: center;"><img src="https://img58.chem17.com/9/20250527/638839555598041125322.jpg" width="615" height="532" align="middle" alt="" /></p><p> </p><div>　　便攜式總氮水質(zhì)測定儀通過(guò)化學(xué)反應將水樣中的總氮轉化為可測量的絡(luò )合物，再利用光學(xué)測量技術(shù)進(jìn)行定量分析，實(shí)現了對水體總氮含量的快速、準確測定，為水質(zhì)監測和環(huán)境保護提供了有力支持。</div><div> </div> <div id="zlbbrnrv" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/News-1631449.html">水質(zhì)檢測儀從分子振動(dòng)到電信號的精準解碼</a></li> <li>下一篇：<a href="/News-1625984.html">便攜式氨氮快速測定儀環(huán)境監測的“輕騎兵”</a></li> </ul> </div> </div></div>   <div id="zlbbrnrv" class="ly_foot"> <div id="zlbbrnrv" class="ly_Ftmain"> <div id="zlbbrnrv" 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