Discuss about the hydrometer method to determine soil, Science

Assignment Help:

Discuss about the Hydrometer Method to determine soil

Bouyoucos devised a simple and rapid technique using a specially designed hydrometer to determine sand, silt and clay content of soil without separating them. In this method a known amount of the air dry soil (say 50 g of fine soil) is dispersed in a known amount of water containing calgon (sodium hexametaphosphate) solution. After a certain period of time, in this case 40 seconds, when the largest particle (the sand) will have settled on the bottom of the cylinder, the density of the liquid is determined with the help of a hydrometer.  This gives a measure of the silt and clay in the soil. So, the 40 sec reading is the reading "grams of silt and clay in suspension".  Similarly, a density measurement is performed at two hours when the silt would also have settled. This two hour reading reads "grams of clay". The amount of sand is determined by subtracting the 40 second reading from the total amount. 

 


Related Discussions:- Discuss about the hydrometer method to determine soil

State the pipette method of soil, State the Pipette Method of soil The ...

State the Pipette Method of soil The   sieve analysis, though is a true particle size analysis, is  unable to separate particles smaller than 20 microns. Such particles are sep

Explain the conditions for ventricular fibrillation, Explain the Conditions...

Explain the Conditions for Ventricular Fibrillation Ventricular fibrillation may be seen in the following two conditions: 1) When a person is electrocuted, and 2)  As a c

Coastal seafood, Coastal Seafood Coastal Seafood is a family-owned busi...

Coastal Seafood Coastal Seafood is a family-owned business that operates on the East Coast. The company already uses both financial and point-of-sale software, but has been una

Reproduction, How does the intercourse work?

How does the intercourse work?

Need for code of behaviour for laboratory staff, Need for Code of Behaviour...

Need for Code of Behaviour : A laboratory is a potentially dangerous working environment. Cuts from broken glass, chemical or thermal burns and poisoning are three examples of lab

First aid procedures for chemical accidents, FIRST AID PROCEDURES FOR CHEMI...

FIRST AID PROCEDURES FOR CHEMICAL ACCIDENTS : There are three general procedures to be followed for chemical accidents and all are based on the principle of diluting the hazardous

Vulvovaginitis, what is the cause and effect of vulvovginitis?

what is the cause and effect of vulvovginitis?

Observing sun spots, Observing sun spots Use the telescope that you mad...

Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd