硝酸盐还原检测_检测机构-「中析研究所」

发布：中析研究所时间：访问：141

检测项目

亚硝酸盐生成量：判定硝酸盐还原酶活性的直接指标，反映还原反应程度
硝酸盐残留浓度：确认硝酸盐是否被完全还原，残留量高说明还原活性弱
硝酸盐还原酶活性：定量表征样本中酶促还原反应速率
亚硝酸盐还原酶活性：判定亚硝酸盐能否被进一步还原为氮气
反硝化速率：评估微生物群体将硝酸盐逐步还原为气态产物的能力
格里斯试剂显色反应：定性判定亚硝酸盐是否生成的经典确证指标
锌粉验证试验：区分未还原硝酸盐与已完全还原的关键确证步骤
pH值变化：还原过程产碱或产酸可指示代谢活性
菌落总数：辅助评价样品中微生物负荷对还原反应的贡献
培养温度稳定性：保证酶反应条件符合标准要求的环境参数
溶解氧含量：好氧与厌氧条件对硝酸盐还原路径影响的关键因素
化学需氧量：评价水体有机污染与反硝化碳源供给水平
总氮含量：综合评估含氮化合物转化情况
氨氮浓度：判定硝酸盐异化还原为铵途径的发生程度
气态氮产物检测：确认反硝化终产物，判定完全反硝化能力
氧化还原电位：反映体系厌氧程度及反硝化适宜性
接种量控制：影响检测结果重现性的关键操作参数
培养时间判定点：标准规定的观察时限，直接影响结果判读
培养基成分符合性：保证细菌生长与酶表达的营养基础指标
阴阳性对照试验：保证检测体系有效性的质控项目

检测范围

饮用水硝酸盐还原检测
地表水硝酸盐还原检测
地下水硝酸盐还原检测
生活污水硝酸盐还原检测
工业废水硝酸盐还原检测
食品样品硝酸盐还原检测
乳制品硝酸盐还原试验
肉制品硝酸盐还原检测
蔬菜制品硝酸盐还原检测
腌制食品硝酸盐还原检测
土壤浸出液硝酸盐还原检测
沉积物硝酸盐还原检测
培养基硝酸盐还原质控检测
肠杆菌科细菌硝酸盐还原鉴定试验
假单胞菌属硝酸盐还原检测
葡萄球菌属硝酸盐还原试验
厌氧菌硝酸盐还原检测
活性污泥反硝化活性检测
生物膜反硝化能力检测
水产养殖水体硝酸盐还原检测
发酵液硝酸盐还原检测
饲料样品硝酸盐还原检测

检测标准（部分）

DB53/T 624-2014 焦化污水硝酸盐氮、亚硝酸盐氮的测定戴氏合金还原－中和滴定法
SN/T 4589-2016 出口蔬菜中硝酸盐快速测定改进的镉还原分析法
DIN EN 12014-3:2005-08 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
HY/T 0346-2022 海水中痕量硝酸盐的测定　流动分析-镉柱还原-重氮偶联-长光程分光光度法
ASTM D7781-23 Standard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase
ГОСТ EN 12014-3-2015 Продукты пищевые. Определение содержания нитрата и/или нитрита. Часть 3. Спектрофотометрический метод определения содержания нитрата и нитрита в мясных продуктах с применением ферментативного восстановления нитрата до нитрита
BS EN 12014-3:2005 Foodstuffs. Determination of nitrate and/or nitrite content-Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
UNE-EN 12014-3:2006 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
ISO 14673-1:2004 Milk and milk products — Determination of nitrate and nitrite contents — Part 1: Method using cadmium reduction and spectrometry
DIN EN 12014-7:1998-08 Foodstuffs - Determination of nitrate and/or nitrite content - Part 7: Continuous Flow method for the determination of nitrate content of vegetables and vegetable products after cadmium reduction
AWWA WQTC71508 Nitrate Reduction Using Electrochemically Induced Pitting Corrosion of Zero-Valent Aluminum
BS EN ISO 14673-1:2004 Milk and milk products. Determination of nitrate and nitrite contents-Method using cadmium reduction and spectrometry
GB/T 12374-1990 居住区大气中硝酸盐检验标准方法　镉柱还原-盐酸萘乙二胺分光光度法
AWWA WQTC65748 Reduction of Nitrate through the Use of Nitrate Reductase for the SmartChem Autoanalyzer
ISO 14673-3:2004 Milk and milk products — Determination of nitrate and nitrite contents — Part 3: Method using cadmium reduction and flow injection analysis with in-line dialysis (Routine method)
ASSE(Plumbing) LEC 2008-2021 Listing Evaluation Criteria for Point of Entry Anion Exchange - Nitrate Reduction
AWWA WQTC65871 Regeneration of Perchlorate and Nitrate Loaded Ion-Exchange Resins Using Biological Reduction
DIN EN ISO 14673-1:2004-05 Milk and milk products - Determination of nitrate and nitrite contents - Part 1: Method using cadmium reduction and spectrometry (ISO 14673-1:2004)
BS EN 12014-7:1998 Foodstuffs. Determination of nitrate and/or nitrite content-Continuous flow method for the determination of nitrate content of vegetables and vegetable products after cadmium reduction