Reducing-vaporization mercury analyzer
Newly designed reducing-vaporization mercury analyzer with high sensitivity, high accuracy and multiple functions
Advanced reducing-vaporization mercury analyzer with higher sensitivity and accuracy
The RA-4300 is a new-type of reducing-vaporization mercury analyzer that has higher sensitivity, higher accuracy, and equipped with many required functions.
The design is renewed, and a detector, a reagent dispenser and an automatic sample changer are integrated into a single, compact unit.
The solution of samples decomposed through wet-pretreatment, such as tap water, river water, and industrial wastewater are automatically measured.
Samples are wet-pretreated according to measurement methods specified in standards such as JIS K0102 to transform all mercury into the divalent mercury ion (Hg2+) form.
When Tin (II) Chloride solution is added to the wet-pretreated sample, divalent mercury ion (Hg2+) is reduced to zero-valent metal mercury, and, with a mercury bubbler, metal mercury turns into mercury gas.
The acid mist and water vapor that are generated during mercury bubbling is removed with the electronic cooling unit and other devices, and then mercury gas is introduced into the absorption cell, and mercury is measured by atomic absorption spectroscopy.
Various automation help analyzer without enough experience
The RA-4300 is a standard model for mercury measurement but ensures that a variety of its functions improve the reliability of measurement results and support analyzers who have little experience.
- Daily inspection to check the equipment stability is automated.
- The peak for mercury and the peak for other substances are identified automatically.
- Based on the preset conditions, validity of the calibration curves is automatically determined.
- Flow rate during measurement is monitored to secure the reliability of the automatic measurement.
- The system for high concentration measurements and the additive recovery test support the accuracy of measurements.
You can use sampling tubes used in the previous model, and you can also perform measurements using commercially available centrifuge tubes.
The RA-4300 shares tubes with other analyzers, which leads to reduction in operating cost.
|Sample treatment section||Number of sample||80|
|Drive system||Turn table system|
|Sample tray||Acid-resistant Aluminum|
|Sample container||Glass (50pcs) *Disposable tube is also available|
|Bubbler||Reagent-resistance resin bubbler|
|Reagent dispenser section||Dispensing||Delivered with a tube pump|
|Dispensed reagents||Sulfuric acid, Tin (II) chloride solution, Hydroxylamine hydrochloride solution, Distilled water|
|Mercury detecting section||Measurement principle||Non-dispersive double-beam cold vapor atomic absorption|
|Measurement method||Reducing vaporization with open air-supply (Peak height measuring and integration measuring selectable)|
|Light source||Low pressure mercury discharge lamp|
|Detection limit||0.0025ng/5mL (0.5ppt) |
*5ppt in case of including chemical treatment
|Maximum range||500ng/5mL (100ppb)|
|Mercury removal||Absorption by activated carbon|
|Flow monitor||Flow sensor|
|Data processing system |
|Communication||Ethernet (One-to-one for RA-4300, not for in-house LAN)|
|Display||Peak wave shape, Calibration curve, Measuring time and Measuring result|
|Control software||Start/stop measuring: Controllable, Reagent dispensing volume setup|
|Data processing software||Selectable from 6 formulas (3 linear and 3 3rd Order fits), Correlation coefficient is automatically calculated. |
Statistic calculation: Mean value, Standard deviation, Coefficient of variation (All values are automatically calculated.)
|Measuring conditions, Calibration curve, Measured values, Statistical calculations, Peak wave shape and Measuring time|
|Quality control||Check standard, Avoid abnormally high mercury etc.|
|Installation requirements||Installation dimensions||580W x 530D x 619H (mm)|
|Power supply||(1) AC, single phase, 100V, 220~240V 50/60Hz |
(2) Voltage variation: within ±5%
(3) Power capacity: 0.24 kVA (Excluding PC and printer)
(4) Power quality: Non surging, no high-frequency waves, and noiseless.
(5) Distance from power supply: 2m or less
(6) Ground-fault circuit interrupter: 15mA
(7) Grounding: Grounding terminal with ground resistance of 100Ω or less
Drinking water, Underground water, Seawater, Wastewater, River water, Lake water, Rain-runoff, Liquid & Solid Digestates and more
USEPA 245.1, 245.2, 245.5, 7470A, 7471B, ASTM D 3223-02, EN-1483, APHA 3112, JIS K0102 and more
Exhaust fan and hose can be attached.