HNO3


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Related to HNO3: HC2H3O2

HNO3

Formula for nitric acid.
CAS # 7697-37-2
References in periodicals archive ?
Furthermore, a blank sample was also prepared simultaneously by transferring 10 mL of concentrated HNO3 acid to one of the empty microwave vessels and placed it in the microwave system after it was sealed tightly.
(1993) : "Transformations, lifetimes, and sources of NO2, HONO, and HNO3 in indoor environments".
After the addition of 8 mL of concentrated HNO3 (65%) and 2 mL H2O2 30% w/w, the digestion vessel was closed and heated in the microwave digestion system.
One mL of each sample was placed in PTFE (Teflon) vessels, then four mL HNO3 and two mL H2O2 were added.
For preparing the cathodic electrode CNTs/CA/CC, after CNTs was purified by the acidic treatment that was the mixture of the sulfuric acid ([H.sub.2]S[O.sub.4]) and nitric acid (HNO3) at the concentration of 3:1, 10 mM CA was combined with 10 mg/ml purified CNTs dissolved in 5 ml of ethanol solution and shaken by ultrasonic bath for 16 h.
Some usable details were that the electrodes were immersed in 0.01 M of HNO3 solution for 60s under 0.5V to remove residual metal from the last experiment before each experiment and the washing time should be appropriately extending with the increasing of concentration to be measured.
Concentrated HNO3 (5 ml) of was included and kept in treater digester for 60 minutes at 70oC.
Digestion tubes were first washed and rinsed with distilled water then 0.1 M HNO3 was filled in the digestion tube for two hour.
After this all the soil was cooled and added 1ml HNO3 along with 4ml HClo4 and then again heated between temperatures 200oC - 2100C to dry it with funnel condenser.
Then 0/5 g of each dried tissues with three replicates were digested in concentrated HNO3 & HCL[O.sub.4] (Merck) in the ratio of 3:1.
* fast piece test extraction from electrolytic bath, drying and metallographic attack with 2,3% HNO3 to distinguish the microscopically structure of that;
Analytical grade reagents including Copper Sulphate (CuSO4), Potassium Sulphate (K2SO4), Sodium Hydroxide (NaOH), Barium Chloride (BaCl2), Sulphuric Acid (H2SO4), Nitric Acid (HNO3), Hydrochloric Acid (HCl) and Hydrofluoric Acid (HF) were purchased from Merck and were used as such without any further purification.