Scientists have managed to synthesize a chemical component that absorbs ultraviolet light in the atmosphere of Venus. These are acidic iron-containing sulfate materials. They participate in the circulation of chemical elements in the atmosphere and on the surface of a neighboring planet.
Chemistry of the atmosphere of Venus
What do the clouds of Venus consist of? Scientists know that they mainly consist of droplets of sulfuric acid, some water, chlorine and iron. Their concentration varies with altitude in the dense atmosphere of Venus. But until now, they could not identify a chemical component that would explain the spots and bands of clouds visible only in the ultraviolet range.
In a new study published in the journal Science Advances, scientists from the University of Cambridge synthesized iron-containing sulfate minerals resistant to the harsh chemical conditions of the clouds of Venus.
Spectral analysis has shown that the combination of two minerals, rhomboclase and acidic ferric sulfate, can explain the mysterious feature of ultraviolet absorption on our neighboring planet. Based on data from the chemistry of the Venusian atmosphere, the team synthesized several iron-containing sulfate minerals in the Laboratory of Aquatic Geochemistry at the Faculty of Earth Sciences.
Scientists synthesized a mysterious component
By suspending synthesized materials in various concentrations of sulfuric acid and monitoring chemical and mineralogical changes, the team narrowed the range of candidate minerals to rhomboclase and acid ferric sulfate, the spectroscopic features of which were studied with light sources specially designed to simulate the spectrum of solar flares.
The Harvard University Photochemistry Laboratory also participated in the study, measuring the absorption spectra of ultraviolet iron radiation under extremely acidic conditions in an attempt to simulate the extreme clouds of Venus.
“The patterns and level of absorption shown by the combination of these two mineral phases are consistent with the dark UV-patches observed in Venusian clouds,” said scientists. “These targeted experiments revealed the intricate chemical network within the atmosphere, and shed light on the elemental cycling on the Venusian surface.”
According to phys.org
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Wanasayansi wamefaulu kutengeneza kemikali inayoweza kunyonya mwangaza wa ultraviolet katika angahewa la sayari ya Venus. Hizi ni asidi chuma-kujumuisha sulfate vifaa. Wao hushiriki katika mzunguko wa elementi za kemikali katika angahewa na juu ya uso wa sayari jirani. Kemia ya angahewa la Venus Mawingu ya Venus yanafanyizwa na nini? Wanasayansi wanajua kwamba hasa hufanyizwa na matone ya asidi ya sulfuriki, maji, klorini, na chuma. Kiasi chao hutofautiana kulingana na urefu katika angahewa lenye unene wa Venus. Hata hivyo, hadi sasa, hawajaweza kutambua kemikali inayoweza kueleza kwa nini kuna mawingu na madoa yanayoonekana tu katika mwangaza wa ultraviolet. Katika utafiti mpya uliochapishwa katika jarida la Science Advances, wanasayansi kutoka Chuo Kikuu cha Cambridge waliunda madini ya sulfate yenye chuma ambayo ni sugu kwa hali mbaya za kemikali za mawingu ya Venus. Uchunguzi wa spectral umeonyesha kwamba mchanganyiko wa madini mawili, rhomboclase na sulphate ya asidi ya chuma, unaweza kuelezea kipengele cha ajabu cha kunyonya ultraviolet kwenye sayari yetu jirani. Kwa kutumia data kutoka kwa kemia ya angahewa ya Venus, timu hiyo ilitengeneza madini kadhaa ya sulfate yenye chuma katika Maabara ya Geochemistry ya Maji katika Kitivo cha Sayansi ya Dunia. Kwa kusimamisha vifaa vya synthesized katika viwango mbalimbali vya asidi sulfuric na kufuatilia mabadiliko ya kemikali na mineralogical, timu hiyo imepunguza mbalimbali ya madini ya mgombea kwa rhombochloride na asidi sulphate ya chuma, ambayo spectroscopic sifa walikuwa alisoma na vyanzo vya mwanga maalum iliyoundwa kuiga wigo wa mwangaza wa jua. Maabara ya Photochemistry ya Chuo Kikuu cha Harvard pia ilishiriki katika utafiti huo, ikipima spectrums ya kunyonya ya mnururisho wa chuma wa ultraviolet chini ya hali ya asidi sana katika jaribio la kuiga mawingu ya Venus. "Mfano na kiwango cha kunyonya kilichoonyeshwa na mchanganyiko wa awamu hizi mbili za madini ni sawa na patches nyeusi za UV zilizochunguzwa katika mawingu ya Venus", wanasayansi walisema. <unk>Hizi majaribio lengo alifunua mtandao tata kemikali ndani ya anga, na kutupa mwanga juu ya elemental mzunguko juu ya uso wa Venus.<unk> Kulingana na phys.org Tufuate kwenye Twitter kupata habari ya nafasi ya kuvutia zaidi katika muda