Shuohao Cai, nwa akwụkwọ doctoral na sayensị ala, na-etinye mkpanaka sensọ nwere ihe mmado ihe mmetụta multifunction nke na-enye ohere nha na omimi dị iche iche n'ime ala na Mahadum Wisconsin-Madison Hancock Agricultural Research Station.
MADISON - Mahadum nke Wisconsin-Madison injinia emepụtala ihe mmetụta dị ọnụ ala nke nwere ike inye na-aga n'ihu, nleba anya n'ezie nke nitrate na ụdị ala Wisconsin. Ihe mmetụta electrochemical ndị a e biri ebi nwere ike inyere ndị ọrụ ugbo aka ime mkpebi nlekọta ihe oriri na-edozi ahụ nke ọma ma nweta uru akụ na ụba.
Joseph Andrews, osote prọfesọ na Mahadum Harvard kwuru, "Ihe mmetụta anyị nwere ike ime ka ndị ọrụ ugbo ghọtakwuo ọnọdụ nri nke ala ha na ọnụọgụ nitrate dị na osisi ha, na-enyere ha aka ikpebi nke ọma ole fatịlaịza ha chọrọ n'ezie." Ụlọ akwụkwọ nke Mechanical Engineering na-eduzi ọmụmụ ihe a na Mahadum Wisconsin-Madison. "Ọ bụrụ na ha nwere ike ibelata ọnụ ọgụgụ fatịlaịza ha zụrụ, ego a na-akwụ ụgwọ nwere ike ịba uru maka ugbo buru ibu."
Nitrates bụ nri dị mkpa maka itolite ihe ọkụkụ, mana nitrates karịrị akarị nwere ike ịpụta n'ala wee banye na mmiri dị n'ime ala. Ụdị mmetọ a na-emerụ ndị na-aṅụ mmiri olulu mmiri emetọọ na-emerụkwa gburugburu ebe obibi. Enwere ike iji ihe mmetụta ọhụrụ nke ndị nchọpụta ahụ dị ka ngwá ọrụ nyocha ọrụ ugbo iji nyochaa nitrate leaching ma nyere aka mepụta usoro kachasị mma maka ibelata mmetụta ya.
Ụzọ dị ugbu a maka nyochaa nitrate ala na-arụ ọrụ siri ike, dị oke ọnụ, na anaghị enye data ozugbo. Ọ bụ ya mere ọkachamara n'ihe gbasara eletrọnịkị Andrews na ndị otu ya ji malite ịmepụta ihe ngwọta ka mma na nke dị ọnụ ala.
N'ime oru ngo a, ndị nchọpụta jiri usoro mbipụta inkjet mepụta ihe mmetụta potentiometric, ụdị ihe mmetụta electrochemical dị mkpa. A na-ejikarị ihe mmetụta nwere ike tụọ nitrate na ngwọta mmiri mmiri. Otú ọ dị, ihe mmetụta sensọ ndị a adịkarịghị adabara maka ojiji na gburugburu ala n'ihi na nnukwu akụkụ ala nwere ike ịcha ihe mmetụta ma gbochie nha nke ọma.
Andrews kwuru, "Isi ihe ịma aka anyị na-agbalị idozi bụ ịchọta ụzọ iji mee ka ihe mmetụta electrochemical ndị a na-arụ ọrụ nke ọma na ọnọdụ ala siri ike ma chọpụta nke ọma ion nitrate," Andrews kwuru.
Ihe ngwọta nke otu ahụ bụ itinye akwa polyvinylidene fluoride na ihe mmetụta. Dị ka Andrews si kwuo, ihe a nwere njirimara isi abụọ. Nke mbụ, ọ nwere obere pores, ihe dị ka nanometer 400 n'ogo, nke na-enye ohere ion nitrate na-agafe mgbe ọ na-egbochi irighiri ala. Nke abuo, ọ bụ hydrophilic, ya bụ, ọ na-adọta mmiri na-amịkọrọ ya dị ka sponge.
"Ya mere, mmiri ọ bụla bara ụba na nitrate ga-ahọrọ n'ime sensọ anyị, nke dị mkpa n'ezie n'ihi na ala dịkwa ka sponge na ị ga-efunahụ agha ahụ n'ihe banyere mmiri na-abanye n'ime ihe mmetụta ahụ ma ọ bụrụ na ị nweghị ike ịnweta mmiri mmiri ahụ. Ịnwere ike ịnweta ala," Andrews kwuru. "Njirimara ndị a nke polyvinylidene fluoride oyi akwa na-enye anyị ohere ịwepụta mmiri nwere nitrate, nyefee ya n'elu ihe mmetụta ma chọpụta nitrate nke ọma."
Ndị nyocha ahụ kọwapụtara ọganihu ha na akwụkwọ e bipụtara na Machị 2024 n'akwụkwọ akụkọ Advanced Materials Technology.
Ndị otu ahụ nwalere ihe mmetụta ha na ụdị ala abụọ dị iche iche jikọtara ya na Wisconsin — ala aja, nke a na-ahụkarị na mpaghara ugwu etiti etiti steeti, na loams silty, nke a na-ahụkarị na ndịda ọdịda anyanwụ Wisconsin - wee chọpụta na sensọ rụpụtara nsonaazụ ziri ezi.
Ndị na-eme nchọpụta na-ejikọta ihe mmetụta nitrate ha ugbu a n'ime usoro ihe mmetụta multifunctional ha na-akpọ "ihe mmado sensọ," nke a na-etinye ụdị sensọ atọ dị iche iche n'elu plastik na-agbanwe agbanwe site na iji nkwado nrapado. Ihe mmado ahụ nwekwara ihe mmetụta iru mmiri na okpomọkụ.
Ndị na-eme nchọpụta ga-etinye ọtụtụ ihe mmado uche na post, tinye ha n'ogo dị iche iche, wee lie ọkwa ahụ n'ala. Nhazi a nyere ha ohere ịtụ nha n'ime ala dị iche iche.
"Site n'ịtụle nitrate, mmiri na okpomọkụ na omimi dị iche iche, anyị nwere ike ugbu a nyochaa usoro nitrate leaching ma ghọta otú nitrate si agafe na ala, nke na-agaghị ekwe omume na mbụ," Andrews kwuru.
N'oge okpomọkụ nke 2024, ndị nchọpụta ahụ na-eme atụmatụ itinye mkpanaka 30 sensọ n'ime ala na Hancock Agricultural Research Station na Arlington Agricultural Research Station na Mahadum Wisconsin-Madison iji nwalee ihe mmetụta ahụ.
Oge nzipu: Jul-09-2024