Wehewehe o ka ph mika
ʻO ka mika pH e pili ana i kahi mea hana e hoʻoholo ai i ka waiwai pH o kahi hopena. Ke hana nei ka pH meter ma ke kumu o ka pila galvanic. ʻO ka ikaika electromotive ma waena o nā electrodes ʻelua o ka pā galvanic e pili ana i ke kānāwai o Nerns, ʻaʻole pili wale i nā waiwai o nā electrodes, akā pili pū kekahi i ka ʻike o nā ion hydrogen i ka hopena. Aia kekahi pilina pili ma waena o ka ikaika electromotive o ka pākaukau mua a me ka hoʻopaʻa ʻana o ka hydrogen ion, a ʻo ka logarithm maikaʻi ʻole o ka hydrogen ion concentration ka pH waiwai. ʻO ka pH meter kahi mea analytical maʻamau, i hoʻohana nui ʻia i ka mahiʻai, ka mālama ʻana i ke kaiapuni a me ka ʻoihana. ʻO ka pH lepo kekahi o nā waiwai kumu nui o ka lepo. Pono e noʻonoʻo ʻia nā mea e like me ka mahana a me ka ikaika ionic o ka hopena e hoʻāʻo ʻia i ka wā o ke ana pH.
ʻO ke kumu o ka ph mika
Ua wehewehe ʻia ka pH ma ke ʻano he logarithm maikaʻi ʻole o ka hoʻopaʻa ʻana o ka hydrogen ion i loko o ka wai. ʻOiai he paʻakikī kēia, ma nā ʻōlelo maʻalahi loa, ʻo ka pH ka helu i hoʻohana ʻia e helu i ka acidity a i ʻole ka alkalinity o kahi hopena. Hōʻike ka helu i ka helu o nā ion hydrogen e hiki ke hoʻokuʻu i kahi mea kikoʻī i ka hopena. Ma ka pae pH, ua manaʻo ʻia kahi pH o 7 i kū ʻole. ʻO nā hopena me ka pH o 0-7 i manaʻo ʻia he waikawa, a ʻo nā hopena ma luna o 7 a 14 i kapa ʻia ʻo alkaline solutions. I loko o nā ʻōnaehana olaola, koʻikoʻi ka pH. Mahalo i ka pH i hoʻoponopono pono ʻia, hiki i ka hapa nui o nā biomolecules i ko mākou kino ke hana i nā hana maikaʻi loa. ʻOiai i loko o kahi ʻōnaehana hoʻokolohua, pono e mālama ʻia ka pH pono e loaʻa ai nā hopena pololei. No laila, i loko o nā hoʻokolohua biological, hoʻohana ʻia kahi mea i kapa ʻia he mika pH e nānā pono i ka pH.
ʻO ka pH mika he electrode pane pH e ana i ka hana o nā ion hydrogen i loko o kahi hopena a hoʻouna i kēia ʻike. Aia i loko o ka hāmeʻa he ʻelua paipu aniani, aia kēlā me kēia me kahi electrode, kahi electrode kuhikuhi a me kahi electrode sensor. Hana ʻia ka electrode kuhikuhi me ka solution KCl saturated, ʻoiai ʻo ka electrode sensor aia kahi hopena buffer me ka pH o 7, a ʻo ke kelepona kālā i uhi ʻia me ka chloride kālā i loko o kēia mau hopena ʻelua. Aia ma ka hope o ka electrode sensor he puʻupuʻu i hana ʻia me ke aniani porous i uhi ʻia me ka silica a me ka paʻakai metala.
No ke ana ʻana i ka pH o ka hopena, hoʻokomo ʻia ka mika pH i loko o ka hopena. Ma hope o ka hoʻopili ʻana o ka puʻupuʻu o ka electrode sensor i ka hoʻonā, nā ion hydrogen i loko o ka hoʻonā e pani i nā ion metala ma ka pā. ʻO kēia hoʻololi ʻana i nā ion metala ke kahe ʻana o ke au i loko o ka uea metala, i heluhelu ʻia e ka voltmeter.
ʻO ka pH mika kekahi o nā mea hana i hoʻohana nui ʻia i nā laboratories biological. E nānā mau i ka pH o nā buffers, solutions a me reagents e hōʻoia i ka pololei o nā kūlana hoʻokolohua. No ka hōʻoia ʻana i ka heluhelu pololei ʻana, pono e calibrated nā mea hana i nā manawa a pau.
Hoʻohana i ka mea ʻike mika PH
Ka noi ʻana o ka mea ʻike mika PH ma ke kaʻina hana hoʻomaʻemaʻe hale
Ka hoʻohana ʻana i ka mika pH i ka hoʻomaʻamaʻa ʻana i ka wai ʻino electroplating
Noi o ka PH Meter Online ma ka Hana
ʻO ka calibration o ka mika PH
Ka manawa hoʻouna: Dec-15-2021