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丙硫磷_34643-46-4
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丙硫磷

BW902047 {{goodObj.price > 0 ? '¥' + goodObj.price : '咨詢(xún)'}} ¥{{goodObj.sell_price || 0}} 咨詢(xún) 34643-46-4 50mg {{goodObj.date}} 秦境 {{item.norm}} 93.9% {{inventory}}
丙硫磷介紹:

REFERENCE MATERIAL CERTIFICATE

Reference Material

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

Product Name

Prothiofos

Product Code

BW902047

Lot Number

23091508

CAS No.

34643-46-4

Mol. Formula

C11H15Cl2O2PS2

Mol. Weight

345.25

Certified on

2 Sep 2023

Expiry Date

1 Sep 2026

Storage Temp

4°C ± 4°C

Specification

50mg

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

93.9%

1.0%

Method of Characterisation

GC/FID

Batch Information

Water Content: <0.1% (by Karl-Fischer-Titration)

Uncertainty

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

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

Intended Use

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

Safety

Proper precautions should be observed while handling. See Safety Data Sheet.

Traceability

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

Homogeneity

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

Storage

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

Instructions for use

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


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```
國(guó)家標(biāo)準(zhǔn)解讀
標(biāo)準(zhǔn)名稱(chēng)及標(biāo)準(zhǔn)號(hào) 食品安全國(guó)家標(biāo)準(zhǔn) 植物源性食品中208種農(nóng)藥及其代謝物殘留量的測(cè)定 液相色譜-質(zhì)譜聯(lián)用法(GB 23200.113-2018
適用范圍 適用于植物源性食品中丙硫磷等208種農(nóng)藥及其代謝物殘留量的定量檢測(cè),覆蓋蔬菜、水果、谷物等基質(zhì)。
核心檢測(cè)方法 采用液相色譜-三重四極桿質(zhì)譜聯(lián)用技術(shù)(LC-MS/MS),通過(guò)多反應(yīng)監(jiān)測(cè)模式(MRM)實(shí)現(xiàn)目標(biāo)物定性定量分析。
檢出限與定量限 丙硫磷的檢出限(LOD)為0.005 mg/kg,定量限(LOQ)為0.01 mg/kg,需通過(guò)基質(zhì)匹配標(biāo)準(zhǔn)曲線(xiàn)校準(zhǔn)。
質(zhì)控樣品要求 每批次檢測(cè)需包含空白樣品、加標(biāo)回收樣品(加標(biāo)濃度0.01-0.1 mg/kg),回收率范圍應(yīng)控制在70%-120%,相對(duì)標(biāo)準(zhǔn)偏差(RSD)≤15%。
關(guān)鍵實(shí)驗(yàn)步驟 1. 樣品經(jīng)乙腈提取,QuEChERS法凈化;
2. 色譜柱選用C18柱(2.1 mm×100 mm,1.8 μm),流動(dòng)相為0.1%甲酸水-乙腈梯度洗脫;
3. 離子源為電噴霧電離(ESI+),碰撞能量?jī)?yōu)化至20-35 eV。
特別說(shuō)明 檢測(cè)中需注意丙硫磷與基質(zhì)中其他有機(jī)磷農(nóng)藥的色譜分離,必要時(shí)采用特征離子對(duì)(如m/z 298→125)進(jìn)行二次確證。
```

以上信息僅供參考,請(qǐng)以相應(yīng)標(biāo)準(zhǔn)的原文為準(zhǔn)!

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