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DMA3000/1000 Direct Mercury Analyzer is used to determine mercury content in soil,sludge, waste water, food, produce, cosmetics, feed, fertilizer, coal, cooper concentrate, etc.
It is able to directly measure the total mercury in solid and liquid samples without the need of complex sample pretreatment, effectively avoiding the loss of mercury in the pretreatment process, cross contamination and experimental environmental pollution, and ensuring the accuracy of the analysis data.
Compared with the traditional chemical vapor generation- atomic fluorescence spectrometry method, the pyrolysis method is more efficient, accurate, stable and reliable in measuring mercury, which can greatly reduce labor intensity, and save 70% of analysis time and cost.
Theory of Operation of DMA3000/1000 Direct Mercury Analyzer
Sample is dried by heating and burnt (pyrolysis) in oxygen or air. Its decomposed product is oxidized by the high temperature catalyst carried via oxygen.
Meanwhile, interferent like halogen, nitric oxides, and sulfur oxides are absorbed by catalyst. Moisture is exhausted by pneumatic truncation, and the rest of decomposed product is further conveyed to sub-nanometer Hg-trap. Mercury atoms are selectively captured, and experience secondary atomization by heating Hg-trap. Flowing oxygen carries mercury atoms into the cold atomic absorption detector (253.7nm) for determination, and the total mercury content in the sample is directly calculated by the software.
l Wide Applicability
Suitable for solid and liquid samples, Able to detect samples in 6 different levels, 0.005ng- 1500ng.
l High Efficiency
Only 2-4mins for single analysis, 45 samples/20 samples per batch for DMA3000/1000, and emergency samples can be inserted at any time.
l Easy Operation
Weigh sample and place it on auto feeder without digestion. Complete analysis with just one click on Start key.
l Splendid Repeatability & Accuracy
Integrated catalytic-amalgamation tube ensures measurement repeatability. Composite catalytic agent of high efficiency guarantees the accuracy of test results.
l Low Cost
No need for dehydration consumables, consumable cost is 70% lower than the traditional method.
l Eco-friendly
No harmful chemicals are used in the whole analysis process. The exhaust gas produced by the analysis is effectively absorbed.
| Method No. | Title |
| EPA 7473 |
Mercury in Solids and Solutions by Thermal Decomposition, Amalgamation, and Atomic Absorption Spectrophotometry |
| ASTM D6722 |
Standard Test Method forTotal Mercury in Coal and Coal Combustion Residues by Direct Combustion Analysis |
| ASTM D7623 |
Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method |
| DMA Direct Mercury analyzer | ||
| Model | DMA3000 | DMA1000 |
| Work Principle | Pyrolysis-mercury Amalgamation-Cold Atomic Absorption | |
| Sample type | Solid,liquid and Gas | |
| Max sample capacity | 1500mg for Solid; 1500ul for liquid | |
| Max sample load | 45samples per batch | 20samples per batch |
| Optical source | Low-pressure mercury lamp | |
| Wavelength | 253.7nm | |
| Detector | Double UV photodetector | |
| Repeatability | RSD<1%@1ngHg | |
| Analysis time | 2-4minutes(depends on samples) | |
| Detect limit | 0.001ng | 0.002ng |
| Working range | 0.005ng~1500ng | |
| Analysis method | Adjustable based on samples | |
| Amalgamation tube heating temperature | Room temperature ~950ºC adjustable | |
| Carrier gas | Oxygen (purity >99.5%) or compressed air | |
| Energy consumption | Peak <3000W; Standby < 100W | 2200W |
| Calibration | Standard solution or CRM | |
| Weight | 40kg | |
| Dimension (L*W*H) | 610x500x350mm | |
| Power supply | 110V60Hz; 220V50Hz | |
Q : What products can you offer?
A : We are a one-stop laboratory instrument supplier that can provide customers with products and solutions according to their needs.
Q : How long is your usual delivery time?
A : Our products are usually shipped out 5-7 days after receiving payment.
Q : What transportation methods do you support?
A : We support express delivery (DHL/FEDEX/UPS/TNT), trucks, trains, planes, and ships.
Q : What trade methods can you accept?
A : We support EXW, FCA, FOB, CFR, CPT etc
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