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target="_blank"><strong>硝酸鹽試劑盒</strong></a>適用于各種食品中硝酸鹽/亞硝酸鹽殘留的檢測。該試劑盒使用分光光度計，通過硝酸鹽/亞硝酸鹽酶的變化直接檢測食物中硝酸鹽/亞硝酸鹽的含量。<br /> </div><div>　　硝酸鹽在細菌作用下可還原成亞硝酸鹽。亞硝酸鹽可使血液中毒，致使人體出現頭昏缺氧癥狀;同時亞硝酸鹽可與人體攝入的其他食品、藥品、殘留農藥中的次級胺反應，在胃腔中形成強致癌物--亞硝胺，這是消化系統癌變的罪魁惡首。<br /> </div><div>　　<strong>硝酸鹽試劑盒的原理：</strong><br /> </div><div>　　REAGEN硝酸鹽/亞硝酸鹽酶反應檢測試劑盒是兩次酶反應來檢測食品中硝酸鹽/亞硝酸鹽含量。硝酸鹽在硝酸鹽還原酶的作用下轉變成亞硝酸鹽，亞硝酸鹽跟磺胺和鹽酸萘乙二胺反應產生一種重氮染料。這個過程中，在540nm波長測定其吸收值變化，吸光值變化與測定樣品中硝酸鹽/亞硝酸鹽的含量成比例。<br /> </div><div>　　<strong>硝酸鹽試劑盒的使用注意事項：</strong><br /> </div><div>　　1、樣品測定值超過上限，用生理鹽水稀釋后重新測定，結果乘以稀釋倍數。<br /> </div><div>　　2、本法以定值血清為標準，準確性高。<br /> </div><div>　　3、本產品僅用于體外診斷，內含疊氮鈉，應避免直接接觸皮膚和眼睛，切勿吞咽。<br /> </div><div>　　4、本產品應在2~8℃避光貯存，避免在2~8℃以上及0℃以下存放。<br /> </div><div>　　此外，還適用于分光光度計：將標準品用緩沖液(R1)進行倍比稀釋后的單位濃度為橫坐標，以對應管的吸光度OD值為縱坐標作圖，待測管OD值在曲線上查出對應的濃度值。<br /> </div> </div> <div class="ny_PrevNext"> <div class="Prev">上一篇：<a href="/News-1451800.html">懸浮固體濃度分析儀的測量原理，快來看下吧</a></div> <div class="Next">下一篇：<a 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