{"id":335,"date":"2025-06-16T03:25:51","date_gmt":"2025-06-16T03:25:51","guid":{"rendered":"https:\/\/easylab.co.id\/?p=335"},"modified":"2025-06-16T03:25:52","modified_gmt":"2025-06-16T03:25:52","slug":"microwave-digestion-method-applied-to-alumina-samples","status":"publish","type":"post","link":"https:\/\/easylab.co.id\/ja\/microwave-digestion-method-applied-to-alumina-samples\/","title":{"rendered":"Microwave Digestion Method Applied To Alumina Samples"},"content":{"rendered":"

Aluminum oxide has high thermal and chemical stability, and can be used for high-temperature insulation, making heat shields or protective coatings. When making other materials, the purity of alumina should be very high, and the impurity elements of the material have a great influence on the performance of the final product.<\/p>\n\n\n\n

When analyzing trace elements in alumina, the most important step is the digestion of the sample. Alumina is a material that is difficult to dissolve. The traditional melting decomposition method will bring impurities into the sample. The microwave digestion method is an ideal choice. By virtue of a suitable acid system and temperature and pressure confined space, it can get the ideal decomposition effect in a short time.<\/p>\n\n\n\n

The sample is alumina powder provided by one of our user and the sample will be digested by MWD-650 closed microwave digestion system.<\/p>\n\n\n\n

Model<\/td>MWD-650<\/td><\/tr>
Vessel Quantity<\/td>12<\/td><\/tr>
  Temperature Monitoring System<\/td>Contactless IR Sensor Temperature MonitoringEach Vessel Temperature ControlledTemperature Controlling Range: 50~400\u2103Temperature Accuracy: \u00b10.1\u2103Display Accuracy: \u00b10.1\u2103<\/td><\/tr>
  Pressure Monitoring System<\/td>Contactless Sensor Pressure monitoringEach Vessels Pressure ControlledPressure Controlling Range: 0~20MPaPressure Accuracy: \u00b10.01MPaDisplay Accuracy: \u00b10.01Mpa<\/td><\/tr>
Vessel Volume<\/td>100mL<\/td><\/tr>
Sample Vessel Material<\/td>Imported TFM<\/td><\/tr>
Protection Vessel Material<\/td>Peek+Glass Fiber<\/td><\/tr>
Display<\/td>7 inch Color Touch Screen<\/td><\/tr>
Rotation<\/td>One Direction 360\u00b0 continuous rotating<\/td><\/tr>
Microwave Tank<\/td>316L stainless steel tank with corrosion-proof coating<\/td><\/tr>
Microwave Power<\/td>0-2000W (Adjustable)<\/td><\/tr>
Microwave Leakage<\/td><5mw\/cm2<\/td><\/tr>
Air Exhaust<\/td>High power corrosion-proof air blower<\/td><\/tr>
Power<\/td>AC 220V\u00b110%, 10A, 50\/60Hz<\/td><\/tr>
Dimension<\/td>490\u00d7560\u00d7630mm\uff08L\u00d7W\u00d7H\uff09<\/td><\/tr>
Weight<\/td>70KG\/75KG<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

1. <\/strong>Experiment preparation<\/strong>s<\/strong><\/p>\n\n\n\n

Sample: Alumina powder<\/p>\n\n\n\n

Reagent: Phosphoric acid<\/p>\n\n\n\n

Instrument:  <\/p>\n\n\n\n

MWD-6<\/strong>5<\/strong>0<\/a> Intelligent<\/strong> Closeed <\/strong>Microwave Digestion <\/strong>System<\/strong><\/p>\n\n\n\n

Manufactured by Shanghai Metash Instruments Co.,Ltd.<\/em><\/strong><\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

2. <\/strong>E<\/strong>xperiment procedure<\/strong><\/p>\n\n\n\n

1) Sampling and adding acid<\/p>\n\n\n\n

<\/td>Sample 1<\/td>Sample 2<\/td><\/tr>
Sample volume\uff08g\uff09<\/td>0.2005
(Take the fine powder and weigh a sample)<\/td>		0.2009
(Take the fine powder and weigh a sample)<\/td><\/tr>
85% H3PO4\uff08mL\uff09<\/td>8<\/td>10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

2) Sample digestion method<\/p>\n\n\n\n

After loading the samples and reagents, cover the digestion tank, load it into the digestion apparatus, and perform digestion according to the following procedure:<\/p>\n\n\n\n

Steps No.<\/strong><\/td>1<\/strong><\/td>2<\/strong><\/td>3<\/strong><\/td><\/tr>
Pressure\uff080.1MPa\uff09<\/td>10<\/td>20<\/td>30<\/td><\/tr>
Temperature\uff08\u2103\uff09<\/td>120<\/td>180<\/td>200<\/td><\/tr>
Power\uff08W\uff09<\/td>1500<\/td>1500<\/td>1500<\/td><\/tr>
Heating time\uff08s\uff09<\/td>300<\/td>300<\/td>300<\/td><\/tr>
Constant temperature time\uff08s\uff09<\/td>60<\/td>120<\/td>1800<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

3) Digestion results and analysis<\/p>\n\n\n\n

After sample 1 was digested, there was a small amount of white precipitate in the digestion solution, as shown in Figure 1.<\/p>\n\n\n\n

After sample 2 is digested, there is a small amount of white precipitate in the dissolving solution, and the amount of precipitation is not much different from that of sample 1, as shown in Figure 2.<\/p>\n\n\n\n

The experimental results show that the digestion effects of sample 1 and sample 2 are ideal, and the ratio of reagent selection in sample 1 is good in this experiment (the amount of precipitation does not change significantly after the amount of reagents in sample 2 is increased).<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

3. <\/strong>Experimental results<\/strong><\/p>\n\n\n\n

High-boiling low-pressure phosphoric acid can be used for the digestion of alumina samples. The MWD-650 closed temperature and pressure dual-control microwave digestion system runs at the target temperature for a certain period of time to complete the digestion of the sample.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum oxide has high thermal and chemical stability, and can be used for high-temperature insulation, making heat shields or protective coatings. When making other materials, the purity of alumina should be very high, and the impurity elements of the material have a great influence on the performance of the final product. When analyzing trace elements in alumina, the most important step is the digestion of the sample. Alumina is a material that is difficult to dissolve. The traditional melting decomposition method will bring impurities into the sample. The microwave digestion method is an ideal choice. By virtue of a suitable acid system and temperature and pressure confined space, it can get the ideal decomposition effect in a short […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-335","post","type-post","status-publish","format-standard","hentry","category-metash"],"blocksy_meta":[],"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"marcom","author_link":"https:\/\/easylab.co.id\/ja\/author\/herulindotechsci-com\/"},"rttpg_comment":0,"rttpg_category":"METASH<\/a>","rttpg_excerpt":"Aluminum oxide has high thermal and chemical stability, and can be used for high-temperature insulation, making heat shields or protective coatings. When making other materials, the purity of alumina should be very high, and the impurity elements of the material have a great influence on the performance of the final product. When analyzing trace elements in alumina,…","_links":{"self":[{"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/posts\/335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/comments?post=335"}],"version-history":[{"count":1,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/posts\/335\/revisions"}],"predecessor-version":[{"id":336,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/posts\/335\/revisions\/336"}],"wp:attachment":[{"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/media?parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/categories?post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/easylab.co.id\/ja\/wp-json\/wp\/v2\/tags?post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}