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1)hard limiting,Ó²¼«ÏÞ

2)hardness limit,Ó²¶È¼«ÏÞ

3)hardness of limited carbonate,¼«ÏÞ̼ËáÑÎÓ²¶È

4)limited carbonate hardness method,¼«ÏÞ̼ËáÑÎÓ²¶È·¨

5)utmost carbonate hardness measurement instrument,¼«ÏÞ̼ËáÑÎÓ²¶È²â¶¨ÒÇ

6)as hard as a brick,¼«Ó²

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The limited carbonate hardness method and its use in the testing and ev aluating of scale inhibitors are introduced, and the inhibition efficiencies of scale inhibitors, such as PAPEMP,HPMA(solvent is water), HPMA(solvent is oil), T-225, HEDP, PBTCA, HPAA, are evaluated by it.

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The inhibition pefformances of five fouling inhibitors including HEDP,PBTCA,ATMP,T-225 and YSW-301 were evaluated by the limited carbonate hardness method.

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The optimal evaluation temperature of the utmost carbonate hardness measurement instrument is 70 ¡æ.

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The results of the experiment sh ow that the limited carbonate hardness method is simple, quick and effective.

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Study on a new type of utmost carbonate hardness measuring instrument and its evaluation method

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Study of Threshold Value of Organic Enrichment of Carbonate Gas Source Rocks;

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" Determination of CaCo3, SrCo3 in cathode carbonate by atomic absorption spectrophotometry"

GB/T10304.4-1988Òõ¼«Ì¼ËáÑÎÖÐ̼Ëá¸Æ¡¢Ì¼ËáïȵÄÔ­×ÓÎüÊÕ·Ö¹â¹â¶È²â¶¨

Test method for particle distribution of cathode carbonates by centrifugation sedimentation

GB/T10305-1988Òõ¼«Ì¼ËáÑÎÁ£¶È·Ö²¼µÄ²â¶¨ÀëÐijÁ½µ·¨

Determination of nitrate in cathode carbonate

GB/T10304.5-1988Òõ¼«Ì¼ËáÑÎÖÐÏõËá¸ùµÄ²â¶¨

Determination of nonsolute for chloric acid in cathode carbonate

GB/T10304.7-1988Òõ¼«Ì¼ËáÑÎÖÐÑÎËá²»ÈÜÎïµÄ²â¶¨

Determination of Na in cathode carbonate by atomic absorption spectrophotometry

GB/T10304.6-1988Òõ¼«Ì¼ËáÑÎÖÐÄƵÄÔ­×ÓÎüÊÕ·Ö¹â¹â¶È²â¶¨

Determination of ignition losses in cathode carbonate

GB/T10304.12-1988Òõ¼«Ì¼ËáÑÎ×ÆÉÕʧÖصIJⶨ

Determination of Fe in cathode carbonate

GB/T10304.8-1988Òõ¼«Ì¼ËáÑÎÖÐÌúµÄ²â¶¨

General rule for analytical method of cathode carbonate

GB/T10304.1-1988Òõ¼«Ì¼ËáÑηÖÎö·½·¨Í¨Ôò

"Hard water: Water that contains mineral salts of calcium and magnesium, principally as Bicarbonates, chlorides, and sulfates, and sometimes iron."

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Determination of BaCo3 in cathode carbonate by dichromate iodimetry

GB/T10304.2-1988Òõ¼«Ì¼ËáÑÎÖÐ̼Ëá±µº¬Á¿µÄ²â¶¨ÖظõËá¼ØµâÁ¿µÎ¶¨·¨

Eodiagenesis is characterized by the assemblage of carbonate-analcime-anhydrite, while authigenic kaolinite is found in some strata.

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dipotassium carbonate (neutral carbonate)

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The net result is thus a reduction in the concentration of carbonate ions.

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Determination of heavy metals in cathode carbonate

GB/T10304.11-1988Òõ¼«Ì¼ËáÑÎÖÐÖؽðÊô(ÒÔpb¼Æ)µÄ²â¶¨

Study and Determination of the Ambroxol with Carbon Fiber Electrode Modified by the Bismuth Film;

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