吡啶_單標(biāo)_有機(jī)類_標(biāo)準(zhǔn)物質(zhì)_萘析商城_實(shí)驗(yàn)室科技服務(wù)創(chuàng)新平臺(tái)

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吡啶

BW901109

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秦境

99.3%

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吡啶介紹：

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	Pyridine
Product Code	BW901109
Lot Number	25051521
CAS No.	110-86-1
Mol. Formula	C₅H₅N
Mol. Weight	79.10
Certified on	19 May 2025
Expiry Date	18 May 2030
Storage Temp	20°C ± 4°C
Specification	1g

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.3%

1.0%

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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手機(jī)版：吡啶

本公司銷售的所有產(chǎn)品僅供實(shí)驗(yàn)科研使用，不用于人體及臨床診斷。

1. 標(biāo)準(zhǔn)名稱及標(biāo)準(zhǔn)號(hào)

GB/T 5750.8-2023《生活飲用水標(biāo)準(zhǔn)檢驗(yàn)方法第8部分：有機(jī)物指標(biāo)》

2. 適用范圍

適用于生活飲用水、水源水中吡啶的測(cè)定，檢測(cè)濃度范圍為0.05 mg/L~2.0 mg/L。

3. 核心檢測(cè)方法

氣相色譜法（GC-FID），通過(guò)色譜柱分離目標(biāo)物，采用氫火焰離子化檢測(cè)器定量分析。

4. 檢出限與定量限

方法檢出限（MDL）為0.02 mg/L，定量限（LOQ）為0.05 mg/L。

5. 質(zhì)控樣品要求

每批樣品需包含至少1個(gè)空白樣品、1個(gè)平行樣及1個(gè)加標(biāo)回收樣，加標(biāo)回收率應(yīng)為80%~120%。

6. 關(guān)鍵實(shí)驗(yàn)步驟

（1）樣品預(yù)處理：調(diào)節(jié)水樣pH至堿性，用二氯甲烷萃取；
（2）色譜條件：DB-5毛細(xì)管柱（30 m×0.32 mm×0.25 μm），進(jìn)樣口溫度250℃，檢測(cè)器溫度300℃；
（3）定量分析：外標(biāo)法繪制標(biāo)準(zhǔn)曲線。

7. 特別說(shuō)明

吡啶易揮發(fā)且有毒性，實(shí)驗(yàn)需在通風(fēng)櫥內(nèi)操作；二氯甲烷廢液需按危險(xiǎn)廢物處理。

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