CN106383115A - Method for determining silicon content in aerated water by silicon molybdenum blue colorimetric method - Google Patents

Abstract

The invention discloses a method for determining silicon content in aerated water by a silicon molybdenum blue colorimetric method, wherein the method comprises the following steps: 1) respectively connecting three automatic return-to-zero acid burettes with desalting water bottles, flushing the automatic return-to-zero acid burettes, then connecting acidic ammonium molybdate, 10% tartaric acid and 1-2-4 acid through the three flushed automatic return-to-zero acid burettes, and carrying out reagent flushing, to obtain acidic ammonium molybdate, 10% tartaric acid and 1-2-4 acid for standby application; 2) taking an empty plastic bottle, adding the flushed ammonium molybdate, and then taking to the scene, and directly taking the aerated water with a volumetric flask into the plastic bottle; 3) adding the 10% tartaric acid to the plastic bottle of the step 2); and 4) then adding the 1-2-4 acid, pouring into a silicate analyzer, and determining the silicon content in the aerated water. The burden in a sampling process can be reduced, the time from sampling to testing obtaining can be effectively shortened, and the effect of measuring a plurality of water samples is obvious.

Description

A kind of method of silicone content in employing silicon molybdenum blue colorimetric method for determining soda pop

Technical field

The present invention relates to silicone content analysis technical field, more particularly, to one kind is using in silicon molybdenum blue colorimetric method for determining soda pop The method of silicone content.

Background technology

Silicon is surveyed using silicon molybdenum blue colorimetry, the controlling the water circulation amount of great mountain heat plant is big, general operation anion bed 5, mixed bed 4, survey silicon Workload is big, carries out water quality test in a large number, and do not have laboratory between steam water sampling during particularly opening machine, often lead to will A lot of manpowers are sampled, thus increasing cost of labor, and the chemical examination time is long, and work efficiency is slow.

Number of patent application is 201510629435.7, and entitled one kind is contained using silicon in silicon molybdenum blue colorimetric method for determining ferro-silico aluminium The method of amount, comprises the following steps：Weigh the sample that quality is m, add sodium hydroxide solution heating for dissolving major part sample, so Add dilute hydrochloric acid, the remaining sample of nitric acid dissolving afterwards, heating, after sample dissolution is complete, is cooled to room temperature, is transferred to volumetric flask, point Take part in another volumetric flask, add ammonium molybdate solution to generate molybdenum yellow, add oxalic acid solution to shelter interference element, add sulphuric acid Ferrous ammonium salt solution generates silicon molybdenum blue, is diluted to scale with water, shakes up；Portion is separately taken to do reference solution：Plus oxalic acid solution, ammonium molybdate Solution, l ferrous ammonium sulfate solution, scale is diluted to water, shakes up；Height according to silicone content in sample is from the colorimetric being suitable for Ware and light damping plate, are 650nm from wavelength, carry out the mensure of solution absorbance using 721 type spectrophotometers, in company with sample strip The standard specimen conversion sample content value of the close content of same breed.The method is the silicone content surveyed in metal " ferro-silico aluminium ", inapplicable Silicone content method in mensure water.

Content of the invention

It is an object of the invention to overcoming above-mentioned weak point of the prior art and providing one kind to adopt silicon molybdenum blue colorimetric The method that method measures silicone content in soda pop.

The present invention realizes in the following way：

In a kind of employing silicon molybdenum blue colorimetric method for determining soda pop silicone content method it is characterised in that：Comprise the following steps：

1) three self-zeroing acid burets are connected with desalination water bottle respectively, carry out self-zeroing acid buret Rinse, the self-zeroing acid buret after then rinsing acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid with three is each Couple together and carry out reagent flushing, obtain acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid, standby；

2) take sky plastic bottle, add step 1) rinse after 3ml acidic ammonium molybdat, volumetric flask is directly used at scene of then taking Carry out taking soda pop 100ml to be added in plastic bottle, shake up wait 5min；

3) again toward step 2) in plastic bottle add 3ml % tartaric acid, shake up wait 1min；

4) again toward step 3) in plastic bottle add the 1-2-4 acid of 2ml, pour silicate analyser into and carry out after waiting 8min Measure the content of silicon in soda pop.

The invention has the advantages that：Burden during down-sampling, can effectively shorten from be sampled to chemical examination out when Between, measure multiple water sample effects obvious.

Specific embodiment

The specific embodiment of the invention is described in detail in detail：

In a kind of employing silicon molybdenum blue colorimetric method for determining soda pop, the method for silicone content, comprises the following steps：

1) three self-zeroing acid burets are connected with desalination water bottle respectively, carry out self-zeroing acid buret Rinse, the self-zeroing acid buret after then rinsing acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid with three is each Couple together and carry out reagent flushing, obtain acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid, standby；

2) take sky plastic bottle, add step 1) rinse after 3ml acidic ammonium molybdat, volumetric flask is directly used at scene of then taking Carry out taking soda pop 100ml to be added in plastic bottle, shake up wait 5min；

3) again toward step 2) in plastic bottle add 3ml % tartaric acid, shake up wait 1min；

4) again toward step 3) in plastic bottle add the 1-2-4 acid of 2ml, pour silicate analyser into and carry out after waiting 8min Measure the content of silicon in soda pop.

The present invention using self-zeroing acid buret dosing than artificial pipetted with pipet reagent dosing speed come soon, And can be more accurate.

The present invention using first Plus acidic ammonium molybdate and then arrives in situ quantitation water sample, returns to carry out quantitation more again than field investigation and sampling Plus acidic ammonium molybdate more saves time of measuring, and water sample, without taking, reduces water sample weight more.

When the present invention is for continuous measurement water sample, it is possible to reduce the flushing of self-zeroing acid buret, reduce demineralized water Use, can move to as portable instrument and measure between steam water sampling, reduce manually from water sampling between steam water sampling to change Test the workload of room measurement.

Claims (1)

1. in a kind of employing silicon molybdenum blue colorimetric method for determining soda pop silicone content method it is characterised in that：Comprise the following steps：

1) three self-zeroing acid burets are connected with desalination water bottle respectively, carry out rushing of self-zeroing acid buret Wash, then acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid are each connected with the self-zeroing acid buret after three flushings Pick up to carry out reagent flushing, obtain acidic ammonium molybdat, 10% tartaric acid, 1-2-4 acid, standby；

2) take sky plastic bottle, add step 1) rinse after 3ml acidic ammonium molybdat, scene of then taking directly is carried out with volumetric flask Take soda pop 100ml to be added in plastic bottle, shake up wait 5min；

3) again toward step 2) in plastic bottle add 3ml % tartaric acid, shake up wait 1min；

4) again toward step 3) in plastic bottle add the 1-2-4 acid of 2ml, pour silicate analyser into and be measured after waiting 8min The content of silicon in soda pop.