SN/T 5704-2024 in English

VALID

Determination of Multi-elements in Crude Oil and Residual Fuel Oil by Microwave Digestion-Microwave Plasma Emission Spectroscopy

Issued on:2024-12-31
Implemented on:2025-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $120.00
$117.00

Standard No:	SN/T 5704-2024
Document status:	VALID
Title in English:	Determination of Multi-elements in Crude Oil and Residual Fuel Oil by Microwave Digestion-Microwave Plasma Emission Spectroscopy
Title in Chinese:	原油及残渣燃料油中多元素的测定微波消解-微波等离子体发射光谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2024-12-31
Implemented on:	2025-07-01
ICS Classification:	75.040-Crude petroleum
Chinese Classification:	E21-Crude petroleum
Professional Classification:	SN-Import&Export Inspection

Introduction

Technical background of the standard

This standard is an important technical specification for the quality supervision of crude oil and residual fuel oil by the General Administration of Customs. It uses microwave plasma emission spectrometer (MP-AES) combined with microwave digestion pretreatment technology to achieve multi-element simultaneous detection. Compared with the traditional ICP method, microwave plasma technology has the advantages of 60% lower energy consumption and no need for argon gas.

Comparison of core detection parameters

Viscous samples need to be homogenized in a 50-60℃ oven, and the digestion process adopts a gradient heating program:

100℃ for 5min to remove volatile components
Maintain 200℃ for 30min to complete the decomposition of organic matter

Instrument calibration requirements

The standard explicitly prohibits the use of hydrochloric acid matrix standard solution, and recommends the use of nitric acid solution (2+98) for step-by-step dilution to avoid the interference of chloride ions on the microwave plasma.