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甲磺酸达氟沙星_119478-55-6
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甲磺酸达氟沙星

BW905014 {{goodObj.price > 0 ? '¥' + goodObj.price : '咨询'}} ¥{{goodObj.sell_price || 0}} 咨询 119478-55-6 100mg {{goodObj.date}} 秦境 {{item.norm}} 99.9% {{inventory}}
甲磺酸达氟沙星介绍:

Reference Material

This certificate is designed in accordance with ISO17034 and ISO Guide 31. This reference material (RM) was designed,produced andverified in accordance with ISO/IEC 17025, ISO 17034 and a registered qualitymanagement system ISO9001.

Uncertainty

The certified value(s) and uncertainty(ies) aredetermined in accordance with ISO 17034 with an 95% confidence level (k=2).Uncertainty is based on the Total Combined Uncertainty, including uncertaintiesof characterisation, homogeneity and stability testing. Stability values arebased on real evidence opposed to simulation.

The producer certifies that this reference materialmeets the specification stated in this certificate until the expiry date,provided it is stored unopened at the recommended temperature herein. Productwarranties for this reference material are set out in the terms and conditionsof purchase.

Intended Use

This RM is intended for use in a laboratory as acalibration and quality control standard or in method development foranalytical techniques.

Safety

Proper precautions should be observed whilehandling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements arecalibrated with weights traceable to the national standards (DKD). Thecalibration of the balances is verified daily internally and annually by anexternal7 accredited calibration service. Chromatographic methods are traceableto the International System of Units (SI).

Homogeneity

Random replicate samples of the final packaged RMhave been analysed to prove homogeneity compliant with ISO 17034.

Storage

The RM should be stored in the original sealedcontainer at the indicated temperature.

Instructions for use

It is recommended to use 1 mg as the minimum samplesize and if less material is used, to increase the certified uncertainty by afactor of two for half sample and four for a quarter of sample. If storageafter opening is necessary, the RM should be tightly closed and kept from lightand moisture. If the RM was in a sealed ampoule, it should be transferred to avial with minimum head space.


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标准名称及标准号
GB 31650-2019 食品安全国家标准 食品中兽药最大残留限量
适用范围
本标准规定了甲磺酸达氟沙星等兽药在动物源性食品(如肌肉、脂肪、肝脏、肾脏等)中的最大残留限量(MRLs)要求,适用于相关产品的质量监管与检验。
核心检测方法
高效液相色谱-串联质谱法(HPLC-MS/MS)。通过色谱分离与质谱定性定量,确保检测的准确性与特异性。
检出限与定量限
检出限(LOD)为0.5 μg/kg,定量限(LOQ)为1.0 μg/kg。满足食品中痕量残留的检测需求。
质控样品要求
需包含空白样品、加标样品及平行样。加标浓度应覆盖定量限至MRL范围,回收率需控制在70%-120%,RSD≤15%。
关键实验步骤
1. 样品前处理:均质后用乙腈提取,C18固相萃取柱净化。
2. 色谱条件:C18色谱柱,流动相为乙腈-0.1%甲酸水溶液梯度洗脱。
3. 质谱参数:正离子模式,多反应监测(MRM)扫描。
特别说明
检测过程中需避免样品交叉污染,确保标准品与待测物的离子对选择及色谱保留时间一致。不同基质(如肝脏、肌肉)需分别进行方法学验证。

以上信息仅供参考,请以相应标准的原文为准!