21 Questions 42 Answers 0 Followers
Questions related from Antonio Salituro
Hello, I am aware of FDA being the reference institution for food production control. However, I am not sure which guidance in particular defines the testing which are required to be...
11 February 2020 10,055 14 View
Hello, Which are the standard testings for fertiliser and pesticides which are required by current legislation? Thanks, Antonio
11 February 2020 8,677 6 View
Hello, I have got an MSDS indicating the STEL of a compound and I'd like to know what the relevant TWA would be. Is there a general ratio which roughly links the two parameters (regardless of the...
10 January 2020 9,811 4 View
Hello, First, I have to say that this topic is quite new to me and I'm trying to expand my knowledge on it. In particular, I was wondering if any of you had an understanding of how the...
11 June 2019 7,386 1 View
Hello, I was thinking to use the BJH model to measure the pore size distribution of low porosity (mostly meso and macropores)-containing materials. In this regard, I have got the following...
28 May 2019 4,041 7 View
Hello All, Which methodology should I follow to measure water activity of pharmaceutical materials? I am aware that there are two USP procedures in this regard, chapter 922 and 1112. Which of...
13 May 2019 8,144 4 View
Hi All, I would need to analyse some complexes containing Co(II), Zn(II) and Ni(II) but I have been told that Cu source diffractometers would struggle to give meaningful information on these...
06 February 2019 8,973 6 View
Hi All, BET SSA was measured for a pigment (TiO2) using both octane sorption at 30 C (on an IGC system) and N2 sorption. Octane sorption measurement gave a BET SSA three times higher than that...
20 September 2018 3,335 8 View
I would like to fin out more information about which type of material (ideally pharmaceutical compounds) could be suitable to perform both qualitative and quantitative Powder X-ray diffraction...
22 January 2018 1,308 9 View
Hi All, I'm struggling to find a reference reporting a figure related to the CO2 capture capacity for MEA (moles of CO2/mole of MEA). Could you please recommend any? Thanks, Antonio
28 February 2015 6,328 5 View
Hi All, I'd need to remove inorganic fractions (especially Ca-based ones) from my carbons. What's the typical procedure to apply in order to do that? I'd like to know the main conditions (acid...
22 February 2015 9,502 3 View
I'd need to determine Moisture, Volatiles and Fixed carbon for activated carbons by using a thermogravimetric analyzer (TGA). I found different programmes by literature which slightly differ one...
13 January 2015 9,530 7 View
I have to refer to the BS for the determination of ash (BS EN ISO 18122) and volatiles (BS EN ISO 18123) contents of solid biofuels. However I could not figure out which is the relevant standard...
06 January 2015 2,550 1 View
I'm looking for a commercial activated carbon in order to run some CO2 adsorption tests. I was wandering which kind of product might give me better performances.
22 July 2014 8,620 22 View
I've seen from the literature that XRF gives results in terms of oxides (e.g. CaO). Is this correct? What's the difference in terms of chemical composition results between XRF, XRD and EDX?
17 June 2014 7,716 13 View
I need to wash some KOH-activated carbons with HCl. From literature different procedures are reported. Usually the concentration is between 1 and 5 M but just a few studies (almost none of them...
13 June 2014 7,730 4 View
I'm doing some Boehm's titration's to work out the amount of oxygen basic groups present on my carbons. So I've added 50 ml of HCl to 1 g of carbon. I've done this in duplicate and I'm going to...
28 May 2014 191 2 View
I mean, before using ACs for characterisation or other application (e.g. sorption tests), it is supposed to be: Washed with DI water (or which other reagent) Dried at 150 C Is there anything else?
27 February 2014 5,454 8 View
According to the ASTM D2867-09 1 g of activated carbon should be heated up to ca. 150 deg C for 3 h. However in most of the papers I checked out the usual conditions reported are 105 degrees C for...
24 February 2014 4,125 4 View
I managed to find a direct reference to biomass only for the determination of the ash content (E1755-01, http://www.astm.org/Standards/E1755.htm). Should I refer to the standards used for wood as...
03 February 2014 2,995 9 View
I should use TGA by applying the same temperature programme employed for biomass but I would like to know if microalgae decomposition (especially at high temperature, 200-900) could give some...
14 January 2014 8,701 3 View
