波长色散X射线荧光硫(S)分析仪

根据ASTM D2622-10测量石油燃料中超低硫(ULS)

Micro-Z ULS

为石油、汽油以及其他燃料的超低硫分析设计的理学Micro-Z ULS波长色散X射线荧光仪(WDXRF),拥有一个新的特征,可以同时测定硫的峰强和背景强度。测定并校正背景强度变化的能力使获得一个更好的净峰强度测定,从而获得优越的校正以及提高精度。理学Micro-Z ULS 遵照ASTM 2622-10、ISO 20884和JIS K2541-7方法。

卓越的光学器件用于可靠的硫分析

理学Micro-Z ULS是适用于石油基燃料的硫分析,带有一个更低的0.3 ppm硫的检测限(LLD)。 在一个真空环境中使用坚固的器件和一个特殊设计的双曲RX-9分析晶体,Micro Z ULS进行连续的高灵敏度测定。

ASTM D2622性能用于初学用户
为初学用户进行特殊设计,可通过简易操作界面进行从校正到例行分析的所有操作。该分析仪可使用任意标准墙壁电源插座供电。
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Features

  • 石油和汽油的超低硫分析
  • 0.3 ppm检测低限(LLD)
  • 无需He(g)净化
  • 简易使用台式分析仪
  • 遵照ASTM D2622-10
  • 遵照ISO 20884
  • 遵照JIS K2541-7

Micro-Z ULS specifications

Instrument

Wavelength dispersive X-ray fluorescence analyzer

     - Includes vacuum pump

Elemental range: sulfur (S), LLD = 0.3 ppm

Application: analysis of fuels for sulfur content

Single measurement position (std. 35 mm cup)

Supported methods

• ASTM D2622-10

• ISO 20884 and JIS K2541-7

Excitation

40 kV Cr-anode X-ray tube

40 W max power

Detection

Doubly curved RX-9 analyzing crystal

Sealed proportional counter

Fixed optics with switchable receiving slit

    - To select peak or background

Pulse height analyzer (PHA)

Atmosphere

Sample analysis in air

Optics are under vacuum

Environmental conditions

• Ambient temperatures 15 28°C

Relative humidity <75% non condensing

• Vibration undetectable by human

• Free from corrosive gas, dust, and particles

Dimensions / power

• Analyzer: 450 x 410 x 440 mm, 36 kg

• Pump: 323 x 142 x 189 mm, 10 kg

• 100-120 VAC, 15 A or 200-240 VAC, 10 A

Computer

• Embedded dedicated processor

Proprietary operating system

Software

Up to 10 calibrations

Up to 30 standards per calibration

Selectable analysis time (up to 900 s)

Drift correction

Pulse height analyzer (PHA) adjustment

User interface

• LCD display

• Embedded computer

• Membrane keypad and navigation

Options

• Thermal dot printer

• RS-232C data output

Analysis of Ultra Low Sulfur in Automotive Fuels According to ASTM D2622-10

application

Background

Recent developments in ultra low sulfur (ULS) fuel have improved fuel efficiency and created cleaner exhaust gas. Globally, the permitted sulfur limit in fuel oils has been decreased to 10ppm in many countries and regions. For compliance verification, X-ray fluorescence (XRF) spectrometry is the definitive analysis tool for use at distribution terminal and refineries, as well as mobile or stationary testing laboratories.

In recent years, there has been an increasing need for an instrument which does not require the use of helium gas, for instances, when acquisition or delivery of helium to the analysis site is difficult. The Micro-Z ULS (ultra low sulfur) is newly developed Sulfur analyzer which does not requires helium gas in operation. This application note demonstrates that Micro-Z ULS can meet the requirements of ASTM D2622-10.

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